Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1f86a2273e9bdab…

MALICIOUS

PDF

66.8 KB Created: 2021-02-05 20:51:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 4627bf9b6d19a91b0b13d788b77dcfa1 SHA-1: 2dfbc73d743af9fa47ca7c406263fa7ef0905210 SHA-256: a1f86a2273e9bdabd240047a5781ff5614b499676692d37c74770c9899dca9c7
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains a large number of external links, suggesting it is part of a link farm designed to direct users to malicious websites. While no scripts were explicitly extracted, the PDF structure and the presence of external links indicate a phishing or malicious redirection attempt.

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://bologen.ru/123?utm_term=anime+wolves+with+wings PDF link annotation
    • https://gatamerat.weebly.com/uploads/1/3/4/0/134000446/vedimelaliwepe.pdfIn PDF document text
    • https://cdn.sqhk.co/vefomatakin/akUhef1/xuvapizugefisedarukuru.pdfIn PDF document text
    • https://lulexabike.weebly.com/uploads/1/3/1/4/131407361/vobawaposise_birar_fixoz_nofaz.pdfIn PDF document text
    • https://cdn.sqhk.co/pilozarager/dhcidhg/man_down_shia_labeouf_netflix.pdfIn PDF document text
    • https://fexedewikefitug.weebly.com/uploads/1/3/2/6/132681233/39f750a.pdfIn PDF document text
    • https://cdn.sqhk.co/rodesedaded/bLgdKMJ/mezokaxojozilipiluxuduji.pdfIn PDF document text
    • https://cdn.sqhk.co/lomasamube/jfjjgfV/ikea_hours_burbank.pdfIn PDF document text
    • https://bixevojug.weebly.com/uploads/1/3/0/7/130739122/83af43b81a.pdfIn PDF document text
    • https://cdn.sqhk.co/vavewiminiv/8YxlhbE/antique_slot_machines_for_sale_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/tenokesime/iebqheH/pinball_machines_for_sale_ohio.pdfIn PDF document text
    • http://msertis.xyz/yo_soy_eric_zimmerman_volumen_2_googp5dl7.pdfIn PDF document text
    • https://cdn.sqhk.co/lenawemijixe/VFkHYki/xupalusadur.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/pululusodogi/crash_bandicoot_para_emulador_ppsspp_android.pdfIn PDF document text
    • https://s3.amazonaws.com/bizamesuwepe/cutest_babies_video.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/dubotug.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBEF 4932 bytes
SHA-256: 2bbc2fbf5102a8e1716bec6a7cf3f9873904699c981c6e2d2d55cd99742c6bf1
font_01_sfnt_off0000dcae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAE 9828 bytes
SHA-256: 484fcf580b74a45e0f75ea57edf5df53ff490ee7fc8f509421f7b166407a513f

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