Malicious PDF — malware analysis report

Static analysis result for SHA-256 8080ff070570b35e…

MALICIOUS

PDF

43.3 KB Created: 2020-08-09 16:14:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ddae095c5323ec4e8617f4ff938c50e1 SHA-1: b225655cfb13a291caa391a8fa8fe4aa4cddc6cd SHA-256: 8080ff070570b35eb300997fd34a0bc88d63cbf7cd09c5bb898209689670739b
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 designed for SEO spam and phishing. The primary malicious link, 'https://ttraff.ru/pify?keyword=vocabulary+test+pdf+grade+6', is flagged as malicious and likely serves as a lure for users to download further malicious content or visit a phishing site. The ML classifier strongly indicates maliciousness, and the overall structure suggests a downloader or redirector campaign.

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=vocabulary+test+pdf+grade+6 In PDF document text
    • http://files.oscarconstruction1.com/uploads/1/3/2/6/132681464/1994782.pdfIn PDF document text
    • http://rikuluner.kimblevins.com/uploads/1/3/0/8/130874038/7f50a598989.pdfIn PDF document text
    • http://files.ka-bloomgroup.com/uploads/1/3/1/3/131398323/7560275.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/1/0432/1034/2564/files/tom_cruise_biography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/4656343506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9262/3001/files/kewerovuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8901/6472/files/dowikavinegidofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/74115999040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7256/0031/files/66765568021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3038/4537/files/pirated_games_ps3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/pakewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0081/2952/files/employment_insurance_premium_reduction_program_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/mac_keyboard_shortcuts_symbols.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4349/4807/files/rekexujakedig.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_off00005ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFA 5684 bytes
SHA-256: e62086f5582a072fab6fd1461eb6bd6d01553253d40af6f9014c87aa888548b4
font_01_sfnt_off0000736e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x736E 13828 bytes
SHA-256: f1004aed5eb1bbc7285650735bbed5a5a58c54761272d38a65718213b0a55feb

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