Malicious PDF — malware analysis report

Static analysis result for SHA-256 0da7d6491402a89a…

MALICIOUS

PDF

43.1 KB Created: 2020-08-21 08:21:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c301b4abfdcb82d035afcff35786c3c SHA-1: e1d20e0d1abec3a62304a8d57d6f2ea4d106698d SHA-256: 0da7d6491402a89a18cef3fe606e9c763c287a48682be85fa0df769f19eb8455
202 Risk Score

Malware Insights

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

The PDF contains numerous links to an SEO redirector, specifically `https://ttraff.ru/pify?keyword=design+portfolio+template+indesign+free`, which is flagged as malicious. The document body also contains this URL and other benign-looking PDF links, suggesting a link farm or phishing lure. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs points to a redirection or download attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=design+portfolio+template+indesign+free In PDF document text
    • http://files.humboldtcountychamber.com/uploads/1/3/1/4/131453623/sojodobar.pdfIn PDF document text
    • http://kedogogo.prairieskycreations.ca/uploads/1/3/0/8/130873826/7361011.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/1/0439/9346/4990/files/usgs_earthquake_design_maps_summary_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0212/6751/files/51381181385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/talipexorupopitutijidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8244/1113/files/rusilesudaguxudekolego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8705/0390/files/35140632869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6294/2101/files/bacterias_aerobias_e_anaerobias.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6881/5528/files/curriculum_for_agricultural_science_education_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/madoka_magica_decretum_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3918/5303/files/88517038449.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 1

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_off00006a5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5F 5360 bytes
SHA-256: 78948b15545be662187be5b890c3a6f1d35097dc72a643181fc705c2fd4f5c68
font_01_sfnt_off00007c7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7C 10456 bytes
SHA-256: 7a9d405f0b02ab11b541ec9c1c875f8cdd45410cd5b1cefc82fcbaa311b20eb6

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