Malicious PDF — malware analysis report

Static analysis result for SHA-256 428a9a0c86b871c7…

MALICIOUS

PDF

60.2 KB Created: 2020-08-18 19:58:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b5e72a66c2db13513d6068851140a1b5 SHA-1: 6745b490001142dee08a1aa7bc5fb1dda2848636 SHA-256: 428a9a0c86b871c77f4f3d80d741f3bbe4b20c514bf32a108886172ee4ac280b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.cc, disguised as a game guide. This indicates a phishing or social engineering attempt to direct the user to malicious infrastructure. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. No scripts were extracted, but the presence of malicious links is sufficient evidence of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.cc/pify?keyword=kf2+demolitionist+perk+guide In PDF document text
    • http://nubegetom.davidcmahler.com/uploads/1/3/1/4/131482995/6251863.pdfIn PDF document text
    • http://files.crossroadsareabirthclasses.com/uploads/1/3/0/7/130775205/5293186.pdfIn PDF document text
    • http://files.monterreywest.com/uploads/1/3/1/6/131637402/gexeno-salawulozow-nojime-lezubarudin.pdfIn PDF document text
    • http://xemixa.fitbodybyphyl.com/uploads/1/3/1/3/131379015/4438502.pdfIn PDF document text
    • http://files.hindenberg.net/uploads/1/3/1/8/131856954/rotaliritubepa.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/1/0433/0687/7080/files/12247178291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/34391024209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6238/6079/files/speak_up_fraleigh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nunirisolifugonogebivaxez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0554/0509/files/94250927340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6976/6808/files/13051517544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3717/7494/files/45877684279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6615/5430/files/divesemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7729/5516/files/ziwasakamurexikupukabal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2756/0598/files/causes_of_absenteeism_at_work.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2966/6724/files/window_world_st_louis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0947/2669/files/egyptian_art_paintings.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aedc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEDC 5316 bytes
SHA-256: 66f0474a2d8bbba2d5ef8e810ddab63f7c82efd3f1deae002b305c92b39e96b8
font_01_sfnt_off0000c0ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0EA 10336 bytes
SHA-256: 981e56042c8254e03b7e8afe3e8c734879f656f3c2ac84c285846d3e20e2a74d

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