Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d1dc3945d0584af…

MALICIOUS

PDF

68.6 KB Created: 2021-02-24 15:45:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 11f880b33cdc98df11c3f88690819a1a SHA-1: c95a590df4e3d752eba3cdb0732dcb2e00c1cafe SHA-256: 0d1dc3945d0584af7dd10bf57fd0597aa4a140726f93ba2921a92b316a2b92dd
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying a link farm. The document body, though heavily obfuscated, appears to contain product keywords suggesting a lure for SEO manipulation or phishing. The presence of external URIs and the link farm heuristic strongly indicate malicious intent to redirect users to potentially harmful sites.

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://jacksth.ru/award?keyword=bosch+dishwasher+silence+plus+44+dba PDF link annotation
    • http://winovigamaj.mygamesonline.org/wills_eye_philadelphia_broad_st.pdfIn PDF document text
    • http://masalev.ru/holt_sociology_textbook_answersbhssl.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvurero/jjhaAia/turepirogiwulazi.pdfIn PDF document text
    • https://farejebizaf.weebly.com/uploads/1/3/0/8/130815013/5153233.pdfIn PDF document text
    • https://fupobemoxu.weebly.com/uploads/1/3/4/6/134669325/siniginu.pdfIn PDF document text
    • http://vevaxogejaz.scienceontheweb.net/how_to_use_the_super_snark_tuner.pdfIn PDF document text
    • https://xepekozodixati.weebly.com/uploads/1/3/5/3/135346226/nesirowilajuni.pdfIn PDF document text
    • http://rilomenininun.getenjoyment.net/casio_5081_analog_time_set.pdfIn PDF document text
    • https://fazebepipetuko.weebly.com/uploads/1/3/1/3/131384618/nasiluzala.pdfIn PDF document text
    • https://labafapagitef.weebly.com/uploads/1/3/1/6/131637364/9540511.pdfIn PDF document text
    • http://gusanod.22web.org/aksara_jawa_kuno.pdfIn PDF document text
    • http://kamikofonem.mygamesonline.org/honda_mower_hrr2168vka_parts.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wurivuve/leguzolitabumez.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/vidixuv.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/equidade_de_genero.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/62963039356.pdfIn PDF document text
    • http://kirimogopagi.rf.gd/dom_perignon_2006_technical_sheet.pdfIn PDF document text
    • http://sisarul.epizy.com/18512397497.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_off0000cec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC7 5528 bytes
SHA-256: edec899fb714761ce74d520fb0bde9965872242f597f0b87af0f1f51dbeeb2a1
font_01_sfnt_off0000e1a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A0 10352 bytes
SHA-256: fb81abc3dae1dcc2cd48ccae015a9bb0a4cc143264e2933ac650b50ac2489464

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