Malicious PDF — malware analysis report

Static analysis result for SHA-256 3252fda61130a85c…

MALICIOUS

PDF

36.6 KB Created: 2020-08-24 06:55:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 032771f9de011580fe52bd9dda96c700 SHA-1: 3980e72572edb11fccd2dfb8a1f4835c4d42f8ea SHA-256: 3252fda61130a85c6b2c8abcd0c136b9bf259e505dd7c0101f98e88012ad4d84
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) disguised as academic resources. The ML classifier strongly indicates maliciousness, and the presence of a redirector URL suggests an attempt to lead the user to a malicious site for phishing or payload delivery. No scripts were extracted, but the structure and embedded links are indicative of a malicious lure.

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.ru/pify?keyword=peanut+calorimetry+lab+answers In PDF document text
    • http://gakivura.cocopahfarms.com/uploads/1/3/1/8/131856072/tilogedodi_sunuxowunod_zibidub.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/1/0431/3205/9810/files/68800365162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1177/6416/files/archidoxes_magicae.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0432/1177/files/the_ketogenic_mediterranean_diet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4298/7423/files/82338865927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8062/9913/files/63128234973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/8425/8984/files/b_arch_sample_papers_with_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/51563675842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2770/7557/files/ms_excel_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7198/7098/files/776949921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9385/files/pefupoxamunanadiwaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2083/6254/files/najaduzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9624/3364/files/arena_of_evolution_chess_heroes_apkpure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2449/8343/files/84025710251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0737/6546/files/65874104933.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_off00005186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5186 5280 bytes
SHA-256: 8a7c723f907e66f94226aed2a26a8fcb5766526adeb9b81d00453a14f816062c
font_01_sfnt_off00006374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6374 10008 bytes
SHA-256: 50c80117e6f6e7d6e689d2eb996c656bf9d7c78c36fcfd6f0847e87e408bf694

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