Malicious PDF — malware analysis report

Static analysis result for SHA-256 7952ae2e26ff420d…

MALICIOUS

PDF

68.6 KB Created: 2021-01-14 06:11:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a2265f8f8f05a72910cdb03c761b053f SHA-1: a171d1c85dcf904e86e1f4d3a7865a9ec5d23a5a SHA-256: 7952ae2e26ff420de207d8d28b71f7004ba390fd78e10b2383c545de63de2ac4
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://trafffe.ru/wb?keyword=woodworking%20classes%20online%20free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367304/normal_5f8c3f9a04ffd.pdfIn PDF document text
    • https://vutavevivusupe.weebly.com/uploads/1/3/0/7/130776898/davoru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495391/normal_5fac55442b25b.pdfIn PDF document text
    • https://cdn.sqhk.co/derixosu/jdggoif/40418229340.pdfIn PDF document text
    • https://zepaxanodufinek.weebly.com/uploads/1/3/4/4/134455649/7311146.pdfIn PDF document text
    • https://gojolukok.weebly.com/uploads/1/3/4/4/134455450/1385587.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/jeIMRuj/alone_i_prevail_lyrics_meaning.pdfIn PDF document text
    • https://livubefelamujir.weebly.com/uploads/1/3/4/8/134899239/8514645.pdfIn PDF document text
    • https://juwufugoxeza.weebly.com/uploads/1/3/4/5/134528381/katifuzotukeneburiv.pdfIn PDF document text
    • https://fufivivol.weebly.com/uploads/1/3/0/8/130873849/5715567.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/zeworibuzoza/marketing_plan_template_uk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/cisco_catalyst_2960-_plus_24tc-_l_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/alesis_3630_manuale_italiano.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/sumaburukowipoxanufegaki.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/bed_sheet_duvet_covers.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_off0000ceb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB6 5360 bytes
SHA-256: 72f8c2ede71c9092b8f82313ee6acb11a043c41aa93bcf659526f9ba0415bec2
font_01_sfnt_off0000e121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE121 10652 bytes
SHA-256: 9cb426a273660bf4ed94bc7c4283bec6dc958fb3ce77c2baeee5517af674bf12