Malicious PDF — malware analysis report

Static analysis result for SHA-256 17ba2838cb4f4bc5…

MALICIOUS

PDF

92.8 KB Created: 2020-11-25 08:05:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 7d4543ec0602e8c4f5592240532d1f7d SHA-1: 4091bdf0f8256286350cb15a2127d4dad7479e21 SHA-256: 17ba2838cb4f4bc5d4b58247603e8ee4e97015bb660e572a1b3b33c1879eb908
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a link farm. One of the primary URLs, 'https://traffnew.ru/strik?utm_term=civ+6+deity+strategy+2019', is flagged as suspicious. The document body, though heavily obfuscated, suggests a lure related to 'Civ 6 deity strategy 2019', indicating a potential phishing or malware distribution attempt. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-10044375-0'.

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffnew.ru/strik?utm_term=civ+6+deity+strategy+2019 PDF link annotation
    • https://nuzilemuf.weebly.com/uploads/1/3/4/4/134479477/burivo.pdfIn PDF document text
    • https://gakuwalexutibok.weebly.com/uploads/1/3/4/3/134332976/dedalaxifagus.pdfIn PDF document text
    • https://jugijivarute.weebly.com/uploads/1/3/4/6/134620481/kapugolapugubef.pdfIn PDF document text
    • https://suzitarux.weebly.com/uploads/1/3/4/6/134683800/kujifatamo-bojudijidebep.pdfIn PDF document text
    • https://zirufifun.weebly.com/uploads/1/3/0/8/130874679/7805359.pdfIn PDF document text
    • https://pigofularujatuf.weebly.com/uploads/1/3/4/3/134360020/ninuxituwupu_lewut_popuzuwet.pdfIn PDF document text
    • https://fobibopokigafo.weebly.com/uploads/1/3/4/7/134702456/wurekagujonowawetez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/97720988095.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/fafoz.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/all_saints_mens_jacket_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/fufedepobofofew.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/lego_battles_cheat_code_for_all_characters.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/islam_marriage_information_in_telugu_language.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000121be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121BE 5356 bytes
SHA-256: fa9bb647d68598bd3d11ac2a9fbe97a3dd90877b422fb474b885c047c1ddad60
font_01_sfnt_off00013409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13409 10524 bytes
SHA-256: 7900e9154fec790ebb3120fe417979aefee5971c39ad58876035b6394d2eda65
font_02_sfnt_off00015811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15811 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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