Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebfa2cad2309584f…

MALICIOUS

PDF

89.3 KB Created: 2021-07-26 02:18:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a5013c6d65c172269bef78db168486b6 SHA-1: 3f974d4af9ebcfeffd106454f489bc32cef1bbd4 SHA-256: ebfa2cad2309584f846bf261f455878c6e7be90097a6ad3881ec664976d64264
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF document exhibits characteristics of a callback phishing or tech-support scam, as indicated by the 'SE_CALLBACK_LURE' heuristic. It contains numerous links to potentially compromised domains, suggesting an attempt to redirect users to malicious content or download further payloads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 http://westernmaki.com/uploads/files/zebegalukit.pdf
    • http://almar-bus.pl/userfiles/file/netanufiwoxagekojosid.pdf
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ba9f69c6967---45332907881.pdf
    • http://syuncyoku.jp/upload/file/leniwikalo.pdf
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/d382be2d170e553eb840d99739aa07ef/11902258115.pdf
    • https://usssecuritate.ro/userfiles/file/xasagosasuru.pdf
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/f9f7972e11bcd4d76e8ee31f03e43d63/razonixerolegalevez.pdf
    • https://almoheetmanpower.com/public_html/userfiles/file/14449130956.pdf
    • http://kinel-hunter.ru/upfiles/file/83311846468.pdf
    • http://odnoklassniki-files.ru/images/uploads/files/83953520746.pdf
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/16074a17ccf447---94629369714.pdf
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf0239df829---46694803537.pdf
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/v4kg28oppa8n78e6h60r360mil/44919425527.pdf
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/006225dcb38106ccbf56c154b7740946/lujawuzujume.pdf
    • http://cuacuonnhanh.vn/Images_upload/files/zurigifazunanujix.pdf
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/16a6157072b9659346c96738a34cd59b/44174376786.pdf
    • http://bike-aholic.com/UserFiles/file/wawapikidasif.pdf
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/16094c52e61db9---25555184991.pdf
    • http://www.doctor-carpet.com/wp-content/plugins/super-forms/uploads/php/files/aib1jf0iesad1m1ge8gfmkg2i4/bebutedinavorimumanogoxes.pdf
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/5d78747e0bb0c55e56a8e826e8fc862c/gizuberarizaximigobuzopu.pdf
    • https://masterjobintl.com/ckfinder/userfiles/files/zetubezaxewalew.pdf
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607168cd2b9e7---70221176815.pdf
    • http://xn--ob0bjxt9h99icicrvkksa421cwwp7hiv4d6a.net/ckfinder/userfiles/files/dowudeditetapapex.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=how+to+get+economically+weaker+section+certificate+in+maharashtra
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f846.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF846 16792 bytes
font_01_sfnt_off0001105d.bin
e460b4662773672636484e9ce70b92fcd43f7ffc65a17cf3193cb6f21ac89a68
pdf-font-stream PDF embedded font (sfnt) at offset 0x1105D 11068 bytes
font_02_sfnt_off000129f7.bin
03afe29fc32e6c11aaf6421e4a550de4ba8c4ebb55a92391151b988b1cb09224
pdf-font-stream PDF embedded font (sfnt) at offset 0x129F7 17048 bytes