Malicious PDF — malware analysis report

Static analysis result for SHA-256 793fbcb6a0d0b5e9…

MALICIOUS

PDF

66.7 KB Created: 2020-12-13 14:55:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-14
MD5: 4e0dcd0e5b92ff79e5929adb57c911b4 SHA-1: 4f4a4a810be6412d5426d61862bf2f4ef0638e0b SHA-256: 793fbcb6a0d0b5e9b277920f723e3ac6b6c5b26e98bcb7e31e7c0c5085bc003b
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gettraff.ru/123?utm_term=ashford+rigid+heddle+loom+assembly In PDF document text
    • https://cdn-cms.f-static.net/uploads/4466143/normal_5fc0575f91c55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455406/normal_5fba01da3e8b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369522/normal_5f8bf005597e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423430/normal_5fb438136f865.pdfIn PDF document text
    • https://nolutoxut.weebly.com/uploads/1/3/4/6/134683805/3756766.pdfIn PDF document text
    • https://nobaditidiz.weebly.com/uploads/1/3/4/2/134235496/zarulugaz_vimipimaku_xotogupiwav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482230/normal_5fa952c1baadf.pdfIn PDF document text
    • https://merafapubumuvu.weebly.com/uploads/1/3/4/8/134887465/tusajarawa_bimaxokalugod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382421/normal_5fb291a87a600.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487413/normal_5fae301d9fea2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc57efae5c7695ca9ba963a/t/5fd077b989fd2c07d103f632/1607497657723/33591974802.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc65777e9fc3622d5470b25/t/5fcc6d4cfe657040d5897183/1607232854611/23575949291.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/33281577535.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/stick_war_3_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB278 6168 bytes
SHA-256: e06e86ff4f533095ccf8f3afa8f143560bb5d376f40c8af3b1edc66df7cb84f4
font_01_sfnt_off0000c7ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7EC 5552 bytes
SHA-256: e19a431fd9c43c114c7c2332fc88277ddf0df9a07ae6617b0319cd0a41a54972
font_02_sfnt_off0000daa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA7 10128 bytes
SHA-256: c7823704765ee6ce789358de06b8694a5f992ae8baa3714bc8e369c20d304e3d

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