Malicious PDF — malware analysis report

Static analysis result for SHA-256 7621f04712d910ec…

MALICIOUS

PDF

95.1 KB Created: 2021-08-04 13:28:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 5e5972c96df0ae7af73724073dcdc75c SHA-1: 76fb9f4cde523fb147785b12b0629d2c4a5ee696 SHA-256: 7621f04712d910ec5755de8142e978fb48513a2f251820b6d2fac9386e6e3bc6
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links pointing to compromised WordPress sites, suggesting it's part of a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to download further payloads or visit phishing pages. No scripts were extracted, but the link farm structure is a common tactic for initial access.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9902

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://travolution.travel/wp-content/plugins/super-forms/uploads/php/files/7b70148b95eba8709c526fb47052d70c/617511575.pdf In PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/2608dc9430429187ee906a2b478a4659/69113908055.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/ef00bb67f6565cc58df10c98babbda4b/kamixemenawemutuwuvonazot.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/00228030b86569ddc2cb3261b4355657/timevevajefowaginus.pdfIn PDF document text
    • http://mousike.it/img_ins/files/webinaxakiguposipawulunub.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/ac9b607bdcd9769014d7e9a8ad2ac588/92664591211.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16075d23fcf80a---2653040991.pdfIn PDF document text
    • https://davaocarrental.com/images/file/64358732164.pdfIn PDF document text
    • http://matonaklawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/puritebasodo.pdfIn PDF document text
    • http://breakevenpoint.pl/uploads/editor/file/86346115337.pdfIn PDF document text
    • http://technocom.pl/editor/file/54303107813.pdfIn PDF document text
    • http://devitohomesorlando.com/userfiles/files/86713661036.pdfIn PDF document text
    • http://anaminfo.com/attachfile/file/19976082486.pdfIn PDF document text
    • https://tomas-music.com/contents//files/45418286200.pdfIn PDF document text
    • https://ever-progress.com/upload/files/kakef.pdfIn PDF document text
    • https://chung-pei.com/userfiles/file/gifilemega.pdfIn PDF document text
    • https://nnt52.ru/userfiles/file/13399720742.pdfIn PDF document text
    • https://ciar.vn/uploads/image/files/mufekiwabadulamidebibimun.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/c72b4bf755aa46c04d6087badd24b08e/putatemazidex.pdfIn PDF document text
    • https://paklya.su/design/img/upload/file/65381743507.pdfIn PDF document text
    • http://laarakkers.com/ckfinder/userfiles/files/21789113024.pdfIn PDF document text
    • http://www.hmh.sk/files/articles/file/15930467240.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/c1c9edceb887a9c498b05888b8f9d04a/xugijiko.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=mathematical+analysis+by+malik+and+arora+pdf+latest+editionPDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2C 16616 bytes
SHA-256: 024c001210310505a00dcf5d663bdad9db0992511af7b47dfc3de2febddf6634
font_01_sfnt_off00010553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10553 17476 bytes
SHA-256: fb770d39d291d4d314f2e3c12f80d9012874e46b0b9ac811b86532b8815beaf0
font_02_sfnt_off00013319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13319 1704 bytes
SHA-256: 2d59b2b1bb9a6f9bbf889029c1db5c2207fa4dbd30617e885d593f86b64e3e7b
font_03_sfnt_off00013b21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B21 11224 bytes
SHA-256: 5dcae9db45205565717d21ef02780675e8886d3430af250acbfd278c29c28f02
font_04_sfnt_off0001550f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1550F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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