Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2a6385c3f4b161a…

MALICIOUS

PDF

74.9 KB Created: 2021-05-10 06:03:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72950325644838b18c5d4e86d4dbda1d SHA-1: 190443eaa2ea924fadda7a57646d57f5337d42b0 SHA-256: b2a6385c3f4b161aeaa731ea60d419bf75a0ff098dd397ecd6f0c2c1431a691c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The file was flagged as malicious by both ML classification and ClamAV, identifying it as a phishing trojan. The presence of multiple embedded URLs pointing to PDF files hosted on various domains suggests a delivery mechanism for malicious content. No scripts were extracted, limiting further analysis of specific execution methods.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c052a08a61---50403169912.pdf
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16078eaaf3b4e3---rugujetibulukexixefuvemix.pdf
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078980c96c33---14471435971.pdf
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5257dacfc61a8885edb165f34c0102b9/66092328021.pdf
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/5b35a445f257238492fd2ade86d17958/49695578048.pdf
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/16085720b5b969---nazegalegiwekanuwaf.pdf
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608b6f5e45776---74079820056.pdf
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/bde972f8aa29723f967574b1955d8ef8/pokow.pdf
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cca8267b0e---xuxupuwabupusanipixe.pdf
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086557047452---gaburofekagaj.pdf
    • http://renovator.cz/files/file/91464136744.pdf
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607006cbe1022---vijonebuwupapukejotob.pdf
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16092c03cb4cc7---bofoxobiwixemukewo.pdf
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/ddd48d1607fb9404083316fb1baebf12/56206219947.pdf
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16071827d212bf---86055042217.pdf
    • https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/4g4662tslb5nr7mjtaofq9qivn/85195815946.pdf
    • https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/d6b3a47435311364a5affe51e72a99c9/pokivizivafima.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=car+accident+reporting+procedure+singapore
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9e7.bin
96c65c1cd91d01cbf7ce359c434d7f24e67025afb259d2e809494e63dab103b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E7 5116 bytes
font_01_sfnt_off0000eb59.bin
dbb3f69cbdb4547c4208e01b17e4224906ed08aa97926cc81824f91062749b59		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB59 10276 bytes
font_02_sfnt_off00010e7f.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E7F 4324 bytes

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