Malicious PDF — malware analysis report

Static analysis result for SHA-256 37c01b392ff67106…

MALICIOUS

PDF

38.9 KB Created: 2020-08-08 21:39:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9484e43c072d671cd97088483d5bbc7a SHA-1: 90ed65fdd3096fd2c40640fb630ba4f442838234 SHA-256: 37c01b392ff67106d631795721b0a0360d74b24ed4611fc2e84fb88e3ca2ed52
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/wb?keyword=wonders%20reading%20writing%20workshop%20pdf`. This indicates a phishing or social engineering attempt to direct the user to malicious content. The document also contains a large number of embedded URLs, many of which are hosted on Shopify, suggesting a link farm or SEO poisoning tactic to obscure the malicious redirector. No scripts were extracted from this sample.

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/wb?keyword=wonders%20reading%20writing%20workshop%20pdf In PDF document text
    • http://tutizogu.susie-carter.com/uploads/1/3/1/0/131071157/zulela.pdfIn PDF document text
    • http://files.donsellmaninvite.com/uploads/1/3/0/7/130775393/97e92.pdfIn PDF document text
    • http://files.brockportmall.com/uploads/1/3/1/4/131437848/776474.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3511/5175/files/80321635515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4385/5258/files/airport_city_manchester.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4297/1553/files/vakagixexanedirufofepupex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/64633149342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/microbial_transformation_of_steroids.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5507/0880/files/37420270905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/22327595416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/difibamegirexezamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8220/2782/files/gutedolase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6371/3690/files/wudakegoxerosimelage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1006/4537/files/debesujuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/79131548694.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 7

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BF4 5228 bytes
SHA-256: af5443fdb8d6d1c8a68f50c38ff7f58c4af386d0e845aab1800bd48611d4f525
font_01_sfnt_off00005dd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD2 10196 bytes
SHA-256: 4eeb48f3bc7acc753ce7014423ae953b8747d01b9bb4d2af2261e55f4b8462f6
font_02_sfnt_off000080ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80AB 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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