Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6d63d91d8eef8bc…

MALICIOUS

PDF

150.1 KB Created: 2021-06-04 19:19:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fc66b22760cf0f85337e42d19dccb91 SHA-1: 75bfcb76f8cb280ab0f9e130d0a479fa827ae7ba SHA-256: a6d63d91d8eef8bc345b9ceddde602aa44ab33db4268e0960a53c1a3e913c3c1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a suspicious domain, and numerous other URLs were extracted, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of external links and the overall detection profile suggest the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 https://maypoin.ru/123?utm_term=transformers+nemesis+prime+toy+review
    • https://ganubidorebe.weebly.com/uploads/1/3/2/7/132740923/0d427df3.pdf
    • https://static.s123-cdn-static.com/uploads/4473926/normal_5fe4987a688b6.pdf
    • https://cdn-cms.f-static.net/uploads/4390328/normal_601a45729e02a.pdf
    • https://cdn-cms.f-static.net/uploads/4447663/normal_5fd9905f38c17.pdf
    • https://lexigeme.weebly.com/uploads/1/3/4/5/134524735/pejevozixuz_mutowelolob_bikiwaxugote.pdf
    • https://cdn-cms.f-static.net/uploads/4495691/normal_60397b4f5e8e4.pdf
    • https://cdn-cms.f-static.net/uploads/4462379/normal_605500a758e96.pdf
    • https://tutemedoz.weebly.com/uploads/1/3/2/8/132814241/kibusevatuxo.pdf
    • https://cdn-cms.f-static.net/uploads/4426832/normal_600ce68e99091.pdf
    • https://cdn-cms.f-static.net/uploads/4501486/normal_60ba4c3d718b8.pdf
    • https://bofanowowedo.weebly.com/uploads/1/3/4/5/134506880/mozujifolofudi_ravizepepepe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/2a821a73-c0d9-4bf7-a01a-807bd7aae644/nexinasiwovozivopisidu.pdf
    • http://nikekuva.pbworks.com/w/file/fetch/144414246/slayer_leecher_v0_5.pdf
    • http://vatojorisa.pbworks.com/w/file/fetch/144443058/getebi.pdf
    • http://zixereves.pbworks.com/f/anatomy__physiology_the_unity_of_form_and_function_9th_edition_by_kenneth_saladin.pdf
    • https://uploads.strikinglycdn.com/files/8883d656-7f8b-4756-ab8d-d4111b049fc6/nejobisa.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001f48b.bin
d0a9c75ff300a57e8adc9c60b8e4be81585bd13a97d0dbf3caec4e235a631f82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F48B 4908 bytes
font_01_sfnt_off000205bf.bin
7862c544e8df76dae8eeec5ed3f9583c742c9d91443adf71597ac76738508157		 pdf-font-stream PDF embedded font (sfnt) at offset 0x205BF 5004 bytes
font_02_sfnt_off000216b8.bin
47653a3c442ba364eb3e83ac8de71248fff585a13c095acabb20ba176efd4ef3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x216B8 11364 bytes
font_03_sfnt_off00023c75.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23C75 4324 bytes

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