Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bc7410add1aea26…

MALICIOUS

PDF

67.2 KB Created: 2020-11-09 18:50:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 9a4e2d91b241cd6bcc8110738d1747ef SHA-1: 724f632c3948c0158c15b515cf207cdeb9cf5da5 SHA-256: 5bc7410add1aea2654d1acc233cda8428a6baeaf9ddf55ae8c3e986fd2455a0c
254 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffking.ru/aws?keyword=citizen+an+american+lyric+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379610/normal_5f90734c751bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374518/normal_5f8b84c2cbb20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377656/normal_5fa254f620175.pdfIn PDF document text
    • https://kiriwalukejogof.weebly.com/uploads/1/3/4/3/134310578/vijowilo.pdfIn PDF document text
    • https://juporolo.weebly.com/uploads/1/3/1/3/131380745/zaxamagiputijor-wesakavul-kewaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376879/normal_5f89de434eed8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476596/normal_5fa5d09f4dc37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379374/normal_5f8d23ebefc67.pdfIn PDF document text
    • https://sufimaxunexex.weebly.com/uploads/1/3/4/3/134345405/jofezumizekiwutupit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f873396b04bf.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/a63fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369336/normal_5fa655a6dd12a.pdfIn PDF document text
    • https://ganubosi.weebly.com/uploads/1/3/4/5/134506756/e46005b8fa7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2c8c6ce-08d5-4e5b-b271-3445ee8983dd/tadasipifemetakilir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45a80903-04cf-499a-80c2-b2dae9c2144f/68309705428.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_off0000caf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAF8 5180 bytes
SHA-256: d95ef62cc2976ec9188d259f3d3a6885b6a4efc7e8ca14c9832f5e0320f94867
font_01_sfnt_off0000dc90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC90 10436 bytes
SHA-256: 1d8388b8a8d4173e3e1a51c3f4fe1c813f3ff8079d839416aa08fb5711ca5b6c

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