Malicious PDF — malware analysis report

Static analysis result for SHA-256 2479a001a43467e0…

MALICIOUS

PDF

32.4 KB Created: 2020-09-17 22:09:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 97138723a8a4ab2e477c5a71f83873ce SHA-1: d048fa40c07d17c5bdb79336655e7f7a985eb380 SHA-256: 2479a001a43467e01e9899bac7a06b2168cfe62a4f1058a7b077db37158fc49f
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to 'math perplexors level d answers' and a URL pointing to a redirector. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content. The primary malicious URL identified is https://ttraff.me/wix?keyword=math+perplexors+level+d+answers.

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.me/wix?keyword=math+perplexors+level+d+answers In PDF document text
    • http://titev.researchingthewest.com/uploads/1/3/0/8/130814873/4769bd4a12.pdfIn PDF document text
    • http://fikebub.kuchamberfestival.com/uploads/1/3/1/4/131437987/6e2bac72a53ea2.pdfIn PDF document text
    • http://files.schoolofmythsanddreams.com/uploads/1/3/0/7/130776757/c79d426a0558.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/1/0436/0847/3763/files/sindoor_tere_naam_ka_episode_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2987/0230/files/history_of_english_literature_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0770/3201/files/dupinigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2318/7616/files/mathematical_reasoning_questions_for_jee_mains.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1355/1774/files/wugamojobomisut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/5286/7240/files/game_campus_life_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/dajokepav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9513/7181/files/eye_of_the_world.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_off00004338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4338 5272 bytes
SHA-256: ed9ea5188a0db72e070fa919f29372e0e20d181b12a82f9c9270c15622f89f1b
font_01_sfnt_off0000553b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x553B 9384 bytes
SHA-256: 48f3e3df35302c43758279eaf34791936cad77c6b088a261c7006d38cc8061de

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