Malicious PDF — malware analysis report

Static analysis result for SHA-256 706852f5e5524959…

MALICIOUS

PDF

41.9 KB Created: 2020-08-20 02:46:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9fc4faeb73351b92a7f6c7d3829627fd SHA-1: ef3e0fe4dbcc467984a6b6783462dcfa020c6b39 SHA-256: 706852f5e5524959650b5d72ce9a12e729ae518664ec49e69fde4681507c8aa9
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains text suggesting it is a 'worksheet answers' document, a common lure for phishing or malware delivery. The presence of a large number of external PDF links, including those to potentially benign Shopify URLs, indicates a link farm SEO tactic to obscure the malicious redirector.

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=levels+of+government+worksheet+answers In PDF document text
    • http://sikidojof.acceleratenewenglandwomen.com/uploads/1/3/0/7/130739964/tofojuludewaxuru.pdfIn PDF document text
    • http://xufodab.bikemanbikerentalkeywest.com/uploads/1/3/1/0/131070786/6956490.pdfIn PDF document text
    • http://jawoda.nova-hall.com/uploads/1/3/2/6/132681495/pimisuwebifinow.pdfIn PDF document text
    • http://files.hamptonshousewife.com/uploads/1/3/0/9/130969740/duzukozape.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/1/0429/6795/7658/files/7397121198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/61059042293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8201/5135/files/aluminum_sulfate_msds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2329/2822/files/xifolovotonotob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1378/3199/files/autocad_architecture_2020_3d_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0222/3013/files/apache_tomcat_8_user_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8903/4402/files/respuestas_cortas_a_grandes_preguntas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/22089848033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8567/6192/files/elevacion_bilirrubina_directa.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_off00006432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6432 5336 bytes
SHA-256: ad47a4119d36d6bc88b9da67b976bd5f5a4766587e47f12c79e36778d9906ffa
font_01_sfnt_off0000764b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x764B 11000 bytes
SHA-256: 0e3f2959405b7bf5a73553291786c8eda10f1afef2eb13f82d5788fa07566b50

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