Malicious PDF — malware analysis report

Static analysis result for SHA-256 d041234389ddde8b…

MALICIOUS

PDF

44.0 KB Created: 2020-08-09 07:29:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f21fd56a351f6c1fa140bda0e927ad92 SHA-1: 302eb1818ca2e23bfbdbc384076b1f456fd1f343 SHA-256: d041234389ddde8bae911b62a79100c2aa8b700a31a2582bb5f938f1b011fa0e
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though obfuscated, contains the text 'Systematic sampling formula pdf', suggesting a lure to trick users into clicking the malicious link. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm used for SEO poisoning or to obscure the final malicious destination.

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=systematic+sampling+formula+pdf In PDF document text
    • http://files.pinwellbooks.co.uk/uploads/1/3/2/7/132710704/tudivi_bugosa.pdfIn PDF document text
    • http://zeliwum.marissaseancruz.com/uploads/1/3/0/9/130969352/a7a07.pdfIn PDF document text
    • http://pibuzomur.krutschworks.com/uploads/1/3/0/8/130813528/fa01f229a9766.pdfIn PDF document text
    • http://files.teachbaketravel.com/uploads/1/3/1/4/131483201/833084.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/1/0427/4031/8375/files/kepurezepuxuvuvemod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/jotulozusebawir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7236632937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/36603302210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0863/0681/files/82592378487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1627/3563/files/92520588019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3826/8830/files/99042358374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8447/8632/files/56413015654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9926/8003/files/gonudimudelikax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1966/4541/files/gate_2020_syllabus_cse_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/22954394091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1421/8151/files/10780810095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7102/0960/files/xubufebamo.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 3

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_off00006bc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC2 5680 bytes
SHA-256: c4a651cc26bbdfdaed88d12e2d836c983192dd094f68a99a08342dfbc2355407
font_01_sfnt_off00007f0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0B 10620 bytes
SHA-256: 4e702dca298481501e6033b10ddbf24b1d610d775f937246f864e97ab8012439

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