Malicious PDF — malware analysis report

Static analysis result for SHA-256 757e0d327addbff5…

MALICIOUS

PDF

64.6 KB Created: 2021-01-25 09:03:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 01473eb0b330f755af3b659cec88e117 SHA-1: 235969bd5f600fa180f08c4827ab95d91fff68bc SHA-256: 757e0d327addbff53ed7202a656f936fd635f582efa3f0bc7f91d79a9c387281
136 Risk Score

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/wb?keyword=star%20wars%20retro%20collection%20stormtrooper%20action%20figure PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369911/normal_5fe6ed4bbceb5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390664/normal_6005eb352ed8f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450141/normal_5fe00b175b49e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454547/normal_5fcda98fab70e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4531523/normal_6000936e7615b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501360/normal_5ffcaab52bb4a.pdfIn PDF document text
    • https://cdn.sqhk.co/lijusute/bWjajbY/kajunusobixujumaduwik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489724/normal_5fe4b8bbf2253.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464330/normal_5fedf9f628b3c.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/eR0nOu1/23492697323.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bigofufujenu.epizy.com/regodirotupu.pdfIn PDF document text
    • http://kurivixudenetiw.epizy.com/jaxevanedolir.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/51367529984.pdfIn PDF document text
    • http://sonasekofuxix.rf.gd/fonokatotizatikeseke.pdfIn PDF document text
    • http://ratadipemor.epizy.com/11419933306.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/automatic_transmission_repair_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/physical_chemistry_chemical_physics_latex_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/addiction_severity_index_asi.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_off0000bf06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF06 5532 bytes
SHA-256: 519ad7a62e688385953d7b6e025bf1c3be0e376893be5fb475daa56aef7ba087
font_01_sfnt_off0000d1d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D6 10268 bytes
SHA-256: 40909b59a6109d84ad9456f0f9e57045d7ec2f9a793e609cc8792f56b9f5f0a9