Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d5fcbe44dd43999…

MALICIOUS

PDF

85.2 KB Created: 2021-08-29 20:12:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: aac7083db50f0aee4cde64be4c10a594 SHA-1: 42eb93ac815ea3c818c53b86098ed3010406984a SHA-256: 9d5fcbe44dd439994eed02069f60e43a5fda71d93921d25717e7dd0b80da90b8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm with numerous URLs, many hosted on compromised CMS uploads, suggesting a phishing or scam attempt. The lure text 'fake credit card generator with unlimited money' indicates a social engineering tactic to entice users to click on these links, which likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://uaatc.com/userfiles/file/51027700017.pdf In PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/060652211a403e1e58e621947c213c3f/warozuwu.pdfIn PDF document text
    • http://zonweringbelgie.nl/ckfinder/userfiles/files/bowotot.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c983b3adf6---zuxivukuwobu.pdfIn PDF document text
    • http://www.bluewhaleline.com/image/upload/File/62139369931.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608b636cac7f0---jujiwasawek.pdfIn PDF document text
    • http://pphjako.pl/userfiles/file/77415247009.pdfIn PDF document text
    • http://hillcresthigh1971.com/clients/9/9f/9fbf9047a6869172a982db6f42f05a9a/File/popozexoritijajakirus.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/94f8947c1bcdbf649b11cbdf6182312b/vifewixazogidotaxuben.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/p6k18p6kt6a31tlm40ng978512/puzepiwikolakorakoka.pdfIn PDF document text
    • http://brunagabriele.it/userfiles/files/9716619837.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/7f5fdba99899e33acfe00b85709dfbd5/65686135834.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606d3ec1da7ae---36602800863.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/68df73e92d34513d336e14e75872fad6/xisusitirenaluratedavoku.pdfIn PDF document text
    • http://www.majbrno.cz/uploads/files/losisonowaliw.pdfIn PDF document text
    • http://angelcabrera.com/FCKfiles/file/30324556227.pdfIn PDF document text
    • http://doremimarlikinsaat.com/userfiles/file/luzobexezorogenoroj.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f729cb5670b---52131513060.pdfIn PDF document text
    • https://hazeloyun.com/calisma2/files/uploads/9888328112.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/043053300b309a04b4f653bc43e14b6d/zulibaritakuzatasused.pdfIn PDF document text
    • http://orderbestwings.com/uploads/files/pemesobawutefo.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/p74p8deurh92tlkj0tl5lclji6/18104677267.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=fake+credit+card+generator+with+unlimited+moneyPDF link annotation
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE646 11020 bytes
SHA-256: 38bb81646490244dd1e38503bdeac429c168981e227614fb29d9c03ab06fdad4
font_01_sfnt_off0000ff8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF8C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001179e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1179E 17920 bytes
SHA-256: 8bbfa300f8447ff5c6ee6ca4b9ad00fb6573cec80a2b27460bddb859c0791953

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