Malicious PDF — malware analysis report

Static analysis result for SHA-256 217179a9e548695f…

MALICIOUS

PDF

75.9 KB Created: 2021-01-05 07:35:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 98e524b4ccdda387561cded6acc99e9a SHA-1: d54d879ae2e4ddcd53bf2557bbd6023fa4f0a7d7 SHA-256: 217179a9e548695ff8bca621270adc03389745b756c191d9c355ed0a88182a1b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to academic answers, aligning with common phishing tactics.

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 https://trafffe.ru/123?utm_term=average+velocity+and+displacement+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/webuzifinuno/ePidgik/55262612467.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459175/normal_5fe22c086529c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/eed382b0-0955-40a5-a8d2-2287a2d640ae/rujurivuwakuxegulipu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3496c74-a634-4626-95a1-68c03644c3ca/paxek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/210f3c75-9ad0-44ce-a179-f5d588953ba9/dv_subbarao_harishchandra_mp3_free_d.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5de06903-546b-4aa8-b2ad-2a02f3491947/egypt_hieroglyphics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c97346c1-2f7b-48eb-ad1f-703c790f138a/spawn_1997_wiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09e03c57-421c-49e8-90fc-85924b84c9bd/ariens_snowblower_repair_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0390480b-15d1-4525-83cd-a4e3fa5f4353/74182728015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aafbc813-5e3b-4cc7-9039-23f1a081c6d3/how_to_reset_a_map_in_gmod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/638d9873-ff2b-4a92-91c0-ca7c9c95af71/92783688410.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/914575a0-7b8e-41bb-a336-125e7287d053/mefujamugofozilatiforova.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77aa3ffc-539b-4043-9049-9c2966e5dff4/81032597947.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE912 5796 bytes
SHA-256: bb8edb91e794a2e2b03124f312f104c14f68826a369245870496819fdc109660
font_01_sfnt_off0000fcc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC1 11024 bytes
SHA-256: 297a6a1a4892ede7210385f1daade4a2d0c4c21f2ebdb447b48a2fb3295c496f

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