Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ab7c2fd23d34f68…

MALICIOUS

PDF

42.1 KB Created: 2020-08-10 03:15:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: add5ef6124e8c90bab5aebc395c029fb SHA-1: 605d6986060d83bae3e96c8305d6d6101d5dce34 SHA-256: 0ab7c2fd23d34f68701564e51e324522f44c4ffa772bdd92fcccad64463ca9cc
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which point to redirector infrastructure. The primary malicious link, 'https://ttraff.ru/pify?keyword=aulas+de+frances+para+iniciantes+pdf', is identified as a malicious redirector, suggesting a phishing or scam attempt. The ML classifier also strongly indicated 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=aulas+de+frances+para+iniciantes+pdf In PDF document text
    • http://wufilaj.carrollswcd.org/uploads/1/3/1/8/131856257/zuvar_lofuka_lulukutotu_wasamozaso.pdfIn PDF document text
    • http://files.redtreefarmstead.com/uploads/1/3/0/8/130874523/zudeles.pdfIn PDF document text
    • http://files.spotteddairyair.net/uploads/1/3/1/0/131071137/6c75aa1a.pdfIn PDF document text
    • http://ranuguwo.chazhearne.com/uploads/1/3/1/4/131407067/769a5b74.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/1/0432/3583/6072/files/zajetopawimatevifum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/witeram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3749/1357/files/83318297297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5674/2046/files/98147188921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2398/5828/files/various_branches_of_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4853/3144/files/33023309612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5622/6716/files/43237467806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1959/2099/files/xidamukadazokunoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6753/1673/files/60686907197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1744/4264/files/88948704984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/42726174983.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 8

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_off00005765.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5765 4912 bytes
SHA-256: 383f4b45faa7a0efe574ef35ba15e6ed51a64caaae43dc84ddb94152eb1def04
font_01_sfnt_off00006814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6814 12124 bytes
SHA-256: d5536b763c02a41d6f91ffb0a5b79597dc7f5c9bda394cf92ec631ce6a3dae25
font_02_sfnt_off00008d58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D58 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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