Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ef2989dd12c3989…

MALICIOUS

PDF

101.6 KB Created: 2021-06-28 12:15:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 3e7fb95b642017491441f9686e5a7b2c SHA-1: 95fe9ef2dfa8212b883a50825663f9db490bd94d SHA-256: 2ef2989dd12c39893424afc36aecf183564e85ce4ce6adb9e1072067cdde5f37
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to host malicious content or redirect to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9711

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ketchas.ru/uplcv?utm_term=bisexual+meaning+in+tamil PDF link annotation
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609c6d750fbbc---11380209514.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/368aa2f30832ab4b7df1f0eec7924bf3/70520085088.pdfIn PDF document text
    • http://xoblates.com/clients/e/e0/e08cfb93fb97b00c28394d0532709dc9/File/jajosexawerupaf.pdfIn PDF document text
    • http://kapsalonvogue.nl/files/file/49266955127.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/ece9f7e7d3a11e1bb332b2ed0a9c357d/nifisoxasagurorakebab.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083645aa0ecd---gomukonelifemobaroviponek.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2225214f3d---13819382835.pdfIn PDF document text
    • http://alphabodysupplements.com/newerac2c/userfiles/file/38450984882.pdfIn PDF document text
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088acbd2f91c---78424192781.pdfIn PDF document text
    • http://cloverpark1961.com/clients/6/6a/6a73a08bb68f643008adb5efbbb44e43/File/sumirewunekirinafefuwogi.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/385032890.pdfIn PDF document text
    • http://vetcarefoundation.org/userfiles/file/nazemaja.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f8243185d2---1778394529.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6f6c9db340---waregovofawuxipi.pdfIn PDF document text
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/a1ddac5c9937e4227a660aeacdc7ef4e/87620758364.pdfIn PDF document text
    • https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/e7720604006f359df1a147c12490b2e8/16100939037.pdfIn PDF document text
    • http://sakuragiramenandsushi.com/uploads/files/bowuwaf.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/9c0d8c1ca1afdfc55e8502510e28a4e1/vesipekebibakupetulu.pdfIn PDF document text
    • https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/1fb4b213d5050764c9d5cf80db194e15/xidipagegebexibuxujog.pdfIn PDF document text
    • https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608118ed3e578---wonomigex.pdfIn PDF document text
    • https://realschoolspirit.net/scauserfiles/files/45364698110.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/7hotkkphsj1l8g3pu736jarie0/90651119521.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6fc4c5447b---71909577022.pdfIn PDF document text
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/fdcf684cc1fb076d92943ce490ab6315/9644151849.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00014efc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x14EFC 19200 bytes
SHA-256: ea368375be691156dcd89467f9199e93ca8267a0a19c6aef036dcff5739232c0
font_00_sfnt_off0000eaf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10306 24304 bytes
SHA-256: a67dfce51f23233e4911dd451851ba5da211a4bb3bd5cf8c4a9f0f300fa320e5
font_02_sfnt_off00013d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D0C 4860 bytes
SHA-256: 7286f7645b0c410336d6f38fd8f86290668659ddf30e30724b0da496e137afd2
font_04_sfnt_off00016ec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16EC2 10488 bytes
SHA-256: 0311d8ebf6d4a78a7ffa52442782df0bfa26d4fa5708898e90d7b398baca60d2

Open this report in the interactive analyzer, or submit your own file for analysis.