Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9f39302da6aa7f4…

MALICIOUS

PDF

49.1 KB Created: 2020-08-06 17:10:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 70038e4edab5f6e51642ec01f6758650 SHA-1: 7c5468c8fb5cb4a21eaf9c9fc87a5073600756ed SHA-256: a9f39302da6aa7f4a3dc97ace6a460bf4af4596743e3264e5ec8d796258097a9
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=azar+grammar+series+pdf', suggesting a lure to download or view a file. The presence of a malicious redirector indicates an attempt to lead the user to a compromised or malicious site. No scripts were extracted, limiting the analysis of further payload delivery or execution.

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=azar+grammar+series+pdf In PDF document text
    • http://nomej.stonesthrowstudio.com/uploads/1/3/1/8/131871721/7674457.pdfIn PDF document text
    • http://files.doneenbaronecoaching.com/uploads/1/3/0/8/130873826/zojivapimozite-fepajid-potudafeter.pdfIn PDF document text
    • http://files.callaoc8.com/uploads/1/3/1/0/131071277/128b9f010.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/1/0434/3581/9173/files/22210680982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9174/5175/files/avadhanulu_and_kshirsagar_engineering_physics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9988/1639/files/1999_subaru_legacy_outback_limited.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/37842010908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3287/7976/files/ramebexifexapemawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3087/9136/files/bakepekaselorefagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7354/9974/files/4320000409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7418/1537/files/rinimaxosaxelilimigonuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/60154575181.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_off000080d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D5 5368 bytes
SHA-256: 1c9fded83a815d1a1c3d891b41c7aabcf371d5e0b6cd6b38ed1b883bea5f2a28
font_01_sfnt_off00009310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9310 11000 bytes
SHA-256: 4ed69ea24dfc58f1b9a4789cfa719e867fd0a3169141843a9b09902d7616a0e5

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