Malicious PDF — malware analysis report

Static analysis result for SHA-256 38de34fc6c5020f1…

MALICIOUS

PDF

41.1 KB Created: 2020-08-08 08:44:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 103e962cbe49d2927341f4c4624ba5c1 SHA-1: f51479224e3a7b143bc06b08c0c9cccaf9d8c4e9 SHA-256: 38de34fc6c5020f11270c9d89f77474a6a7f5c046dc51d1247beccec9d6e370a
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous other links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO and distribute the malicious content. The ML classifier strongly indicates maliciousness.

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=first+angle+and+third+angle+projection+difference+pdf In PDF document text
    • http://files.smartfirstaidcprtraining.com/uploads/1/3/1/3/131379266/2267213.pdfIn PDF document text
    • http://files.silvaweb.net/uploads/1/3/0/8/130814132/xitowimap.pdfIn PDF document text
    • http://zijiru.blueridgestitches.com/uploads/1/3/1/4/131453494/3f736972.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/1/0427/7541/2902/files/27048324408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0899/9074/files/partnership_agreement_south_africa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7537/0136/files/65713534490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3504/1702/files/pdf_file_combiner_software_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/guitar_chords_book_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7122/3446/files/euclidean_distance_formula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2240/8087/files/din_en_iso_527.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8524/8165/files/3_letter_airport_codes_usa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6847/9906/files/allegory_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5821/7631/files/zaponajuzonite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ketotojugidumirazi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9567/8359/files/74843990488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6585/8455/files/geometric_distribution_proof.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 5

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_off000061ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FF 5448 bytes
SHA-256: 0a93f401c3434dd76017c52af8c98700b742a6eb908ce784b55cef3f8962636d
font_01_sfnt_off0000748d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x748D 10060 bytes
SHA-256: e45d25c2422acaed90c15648d202c053299605f0af47ed19db723e6c3414c54b

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