Malicious PDF — malware analysis report

Static analysis result for SHA-256 12dfcd4c9f6856ac…

MALICIOUS

PDF

38.9 KB Created: 2020-10-22 05:42:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 1cfda9d67261bc5d7a04dd0c67422bf8 SHA-1: 9d985fe7d24e0de6ade6a6b530a633ea8b00958d SHA-256: 12dfcd4c9f6856acf0460a0a33d38202e9da6026dbfb4e30f1dbc780ab6fb8ec
192 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector infrastructure, disguised as a game guide. The ML classifier strongly indicates maliciousness. The document body and heuristics suggest a phishing or scam attempt using a link farm to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • 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.
  • 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?keyword=warspear+online+quest+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367627/normal_5f874b9b74890.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382408/normal_5f8d4b3f95d30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381752/normal_5f90b6536be18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369142/normal_5f8bcf9c8b7e0.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/a234f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376599/normal_5f90d78c04b4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386620/normal_5f8dcb8856124.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384851/normal_5f8e438649968.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368953/normal_5f8dcd6fb0a9f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2015/5578/files/2020_dodge_charger_manual_start.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6627/7534/files/27385749108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9789/2031/files/duboxumoroxuzim.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/ruxuduwo.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/6106005053.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/44440294049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1285/8278/files/80560473309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3960/3360/files/definition_of_cultural_identity_in_literature.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4606/3258/files/lowunujomororojalifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7448/4379/files/nepupukaburanixinudowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7777/7061/files/55394951812.pdfIn 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_off00006bb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB0 5268 bytes
SHA-256: eca69d87bcc775c76fba4061eecf9dfe64410f86936e1b8d552eff3b7b76c65a
font_01_sfnt_off00007da5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA5 10580 bytes
SHA-256: a2038ebf9c3a3999642f8bfc43924e1efe28d78a47b34e0f1fb887239b34c407

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