Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f2abbe44ed7f1cf…

MALICIOUS

PDF

76.2 KB Created: 2021-05-21 19:40:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7326ca671424bef6fa9565831c6ad8eb SHA-1: df74968cc9997b0f3065ed1abecc641afe123658 SHA-256: 2f2abbe44ed7f1cffb4b6ecfba16ea6acfa65a26c7840e5fa5e52d31629f1fed
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/strik?utm_term=how+much+do+blinds+cost+for+sliding+glass+doors PDF link annotation
    • https://soxupewo.weebly.com/uploads/1/3/4/3/134392520/budoxip-gigakikeje-gomojaluteri.pdfIn PDF document text
    • https://maxafusisiwesu.weebly.com/uploads/1/3/4/6/134688878/3257018.pdfIn PDF document text
    • https://nudesobaxoxis.weebly.com/uploads/1/3/4/6/134666739/5985512.pdfIn PDF document text
    • https://dinadexoliba.weebly.com/uploads/1/3/6/0/136091941/f75701257e370.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/xalexojaxipud/doyles_guide_family_law_perth_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/ptc_150_thermistor_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/fall_leaf_border_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/kalvisolai_10th_question_paper_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/lafulajesonejuxenata.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/dragon_quest_builders_prima_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/how_to_make_pizza_dough_from_scratch_without_yeast_and_baking_powder.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/canon_pixma_ip2770_installer_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/tadixuwugasiz.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/believe_it_or_not_quiz_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/53539405319.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/filomamujaguduso.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/xiduzirefadalumasuzofulu.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/how_to_get_gerudo_set.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/xogizevakisere.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_off0000ed53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED53 5628 bytes
SHA-256: c32dcd663531cddfff2144137b7c96e9c960e550cffecba4b663db10c60efcba
font_01_sfnt_off0001005d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1005D 10276 bytes
SHA-256: fe87d7f39c31283e15575f8bb8a6ac5f8700d91ba68450747f5cbfe751cd0b4b

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