Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cfe03f6edce5be2…

MALICIOUS

PDF

42.3 KB Created: 2020-08-20 06:23:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c673f6d5d22078dab1480440caaac9e SHA-1: a4a158354fbaf863cee6ff272dfe7c969149ab06 SHA-256: 8cfe03f6edce5be200066078f10808eefc1f6d2f10a4ed8b1413b1dddf9549e1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also exhibits a PDF link farm heuristic, with numerous links to Shopify-hosted PDFs, likely intended to mask malicious activity. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. No scripts were extracted, but the primary attack pattern is clear: redirecting the user to malicious infrastructure via a deceptive link.

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.com/pify?keyword=best+wireless+earbuds+for+android+phones In PDF document text
    • http://bemimobur.intibrazil.com/uploads/1/3/0/7/130775169/xunofodatiboxu-zavubu.pdfIn PDF document text
    • http://files.sisteraspensorensoneugeneoregon.com/uploads/1/3/0/8/130813979/7868489.pdfIn PDF document text
    • http://mujidiv.memmysmommas.com/uploads/1/3/0/7/130739789/repis-rufazetoz-futesukeb.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/1/0433/3171/5225/files/72746712798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8777/3342/files/gopomime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9782/6207/files/g_c3_bcnstige_fl_c3_bcge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8900/0616/files/poserepejuxufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3062/5950/files/jogabuzakelopixokuwujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0896/6307/files/juwogope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7079/7462/files/frases_diarias_en_ingles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8110/5575/files/ansible_interview_questions_and_answers_for_experienced.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4921/2309/files/zimolirenigalobam.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 2

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_off0000677d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x677D 5412 bytes
SHA-256: 94f536180971d730c3231cb10ed7e46c5962ba36b997f01bacc92a28354a4a8e
font_01_sfnt_off000079e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E3 10076 bytes
SHA-256: 9af04cc804f738e313c2639f9c9c2153e277b75dbe7c201424b43baa06d9f375

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