Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d9c2645d35949a…

MALICIOUS

PDF

75.3 KB Created: 2021-02-20 04:27:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: ac801f403354a8553aaf475f3e10c2eb SHA-1: 585b3f4219b12f5033e3f025442dbcb19762f298 SHA-256: 60d9c2645d35949a68dbca35ab7320ffe518d5284cc9b694cb7d59bbcd78c714
126 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The document functions as a link farm, embedding numerous URLs that likely lead to the download of additional malicious payloads. The presence of 'utm_term' parameters in some URLs suggests a phishing or spam campaign context.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jottigo.ru/strik?utm_term=guardian+ad+litem+for+adults+michigan PDF link annotation
    • https://cdn.sqhk.co/posojuvapono/dghfOjf/39129405435.pdfIn PDF document text
    • https://zonidazoledod.weebly.com/uploads/1/3/1/0/131070441/tisuji_dufemu.pdfIn PDF document text
    • http://instas.site/98206587299t6j8b.pdfIn PDF document text
    • https://nubipudovolena.weebly.com/uploads/1/3/4/0/134012318/dd30c34.pdfIn PDF document text
    • http://yachts-4-sale.com/50_inch_tv_with_120hz_refresh_rate61q2g.pdfIn PDF document text
    • https://cdn.sqhk.co/mojikeke/cjbRyhe/paralyzed_nf_lyrics.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427519/normal_5feb7f4f81c85.pdfIn PDF document text
    • http://rejasepilibuxep.iblogger.org/zolozomobidifefutip.pdfIn PDF document text
    • http://smilex.club/tokelalalavobaj4xusx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383925/normal_5fcd79f117d9f.pdfIn PDF document text
    • https://wimupajano.weebly.com/uploads/1/3/4/6/134682998/a7816c60f0c.pdfIn PDF document text
    • http://avit0.pro/225014702330m20u.pdfIn PDF document text
    • https://cdn.sqhk.co/resilano/v2gjz10/95272163904.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421778/normal_600a49289e8df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463010/normal_60212a9bbd4ac.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/lomogas/2373088940.pdfIn PDF document text
    • http://setuvufijub.epizy.com/dapatijiboribanawe.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/burn_it_down_trance.pdfIn PDF document text
    • http://daponub.epizy.com/landlord_routine_inspection_report_template.pdfIn PDF document text
    • http://siwojanapav.epizy.com/feneb.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_off0000e90d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE90D 5468 bytes
SHA-256: 032d2fb0e2bbbdae236448e67b38c5d047c9efeee96411aead6f95b07cb89090
font_01_sfnt_off0000fb7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB7E 10560 bytes
SHA-256: 24382f3aa21347db8fc3f1f28639b615374c8a95d73fdc66b92acd8804abf818

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