Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b568151b01e4caa…

MALICIOUS

PDF

85.8 KB Created: 2021-07-23 03:56:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: af8ec5270ec36d5cb1224baf72f13e05 SHA-1: 24bdbc1a7440042ed110f4d76b60f4348672088c SHA-256: 6b568151b01e4caa1085246df2aec9397b02bbf80ad6bd34999a88a2f7283178
176 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous links to compromised websites, suggesting a phishing or scam lure. The presence of callback phishing lures further supports the conclusion that the document is designed to trick users into interacting with malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160a5568270b8e---31148385997.pdf
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/f03218c42e8820dcb83bf153e7963288/duzemiboxe.pdf
    • https://craftsmancuttingdies.com/wp-content/plugins/super-forms/uploads/php/files/fc39b469a7eb3eadbb915fd6139416be/78446440363.pdf
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/9s54q6m7d59lhcvctp6m9i4qc4/lamazodutite.pdf
    • http://moveworldtogether.com/datas/files/28342626854.pdf
    • https://genegurumiraclehealer.comuserfiles/file/5408761250.pdf
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160781e66be674---11426170030.pdf
    • https://foxtailmag.net/wp-content/plugins/super-forms/uploads/php/files/6c323820fb093c80ee89ff0c7202faf9/71320017287.pdf
    • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/3ec602d73c5af48cf88e29784f9ecf1c/27840674289.pdf
    • http://fotografiafrancescosomma.com/userfiles/files/49170482725.pdf
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16086d673a7704---93404216237.pdf
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160743d394ee15---54531934924.pdf
    • http://arslanemlak.come/file/61950407654.pdf
    • https://farmacieitaliane.com/documenti/file/tanekedevebiw.pdf
    • https://mmszke.hu/files/file/pirorujifira.pdf
    • http://mclarenquartz.in/ci/userfiles/files/sanesafiz.pdf
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/4i3m5jgpip85pi5fmfd3516em6/66825646692.pdf
    • https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/3206d084c585d69e4c87862298d4e3f8/gozedabovuvewaro.pdf
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/rmd48hqn46lineb1vsjrvfo2l5/32498235032.pdf
    • https://cubic.is/userfiles/file/28624050898.pdf
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d07c53e5e6---zejuvelusukoramiji.pdf
    • http://metaglas.kr/userData/board/file/mozexezupon.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=bully+game+for+android+free
    • 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_off0000eeb6.bin
d177e4255128d1a5f4495900750f01ba4d9247fdb23444f657fcef0f2b5762e6
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB6 10700 bytes
font_01_sfnt_off00010707.bin
b9efc0d4ed8c3265bff48630d6ed602a97c51471d9465ad88f31e384ed51544d
pdf-font-stream PDF embedded font (sfnt) at offset 0x10707 16400 bytes
font_02_sfnt_off000131b1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x131B1 16792 bytes