Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b7faa593882664…

MALICIOUS

PDF

76.4 KB Created: 2021-03-14 07:18:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdbf63657ebfc790496f46f7ffcc52ba SHA-1: 734073fea5d8cfbb645ace424af72442c035e27e SHA-256: 60b7faa593882664da0f2c70a91e84a6397ebef211633b931dd1da044d517c17
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The sample is a PDF document flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. The 'SE_CALLBACK_LURE' heuristic indicates the document is designed to trick users into calling a phone number, consistent with callback phishing or tech-support scams. An external URI was also found pointing to a suspicious domain, likely part of the attack chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/wix?keyword=att+uverse+remote+control+setup
    • https://puwaxitakobesod.weebly.com/uploads/1/3/4/1/134109073/jofajexuvexovenikis.pdf
    • http://icub.tech/online_marketing_masters_programs_europexzm2s.pdf
    • https://cdn-cms.f-static.net/uploads/4374847/normal_603015a8c8bc6.pdf
    • https://static.s123-cdn-static.com/uploads/4369923/normal_5fe2260607e8a.pdf
    • https://static.s123-cdn-static.com/uploads/4450160/normal_5ffc52702af73.pdf
    • https://static.s123-cdn-static.com/uploads/4393209/normal_5ff46caa661d7.pdf
    • https://static.s123-cdn-static.com/uploads/4490133/normal_6003f91f429e1.pdf
    • https://sigoxavofilaza.weebly.com/uploads/1/3/4/6/134697452/a68b9.pdf
    • https://cdn-cms.f-static.net/uploads/4415334/normal_604d28f4c2eae.pdf
    • https://cdn-cms.f-static.net/uploads/4408864/normal_5fd153bd4007b.pdf
    • https://static.s123-cdn-static.com/uploads/4463812/normal_5fe110cfe55b4.pdf
    • https://vefonero.weebly.com/uploads/1/3/1/0/131070196/e899e3df8ee56dd.pdf
    • https://tatudibew.weebly.com/uploads/1/3/0/8/130813899/0d5fdfa5f4a3e.pdf
    • http://constructionhouse.info/nexubobatepw5buu.pdf
    • https://cdn-cms.f-static.net/uploads/4457302/normal_6030a320b6d6b.pdf
    • https://cdn-cms.f-static.net/uploads/4462376/normal_6015e90d7d9fe.pdf
    • https://static.s123-cdn-static.com/uploads/4427094/normal_600026732ce34.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://womawujun.atwebpages.com/64259718546.pdf
    • http://nununad.myartsonline.com/36347856363.pdf
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ece3.bin
c4a54fd02493eab9eb97615cabf5e7f98a7db01abb901867e8972d24252454ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECE3 4916 bytes
font_01_sfnt_off0000fd92.bin
236561d457a4a1c8f91883e03061af482aaa210ed5de7140f7695e86657b8de2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD92 11008 bytes

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