Malicious PDF — malware analysis report

Static analysis result for SHA-256 920731bd44ed1dca…

MALICIOUS

PDF

75.3 KB Created: 2020-08-22 08:05:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e89d0259acde92c73aaddbe2806176d SHA-1: e180f4a796ae4cc08decd7fba253009e7becdb89 SHA-256: 920731bd44ed1dcafe9e6dbdc0ab6df986af565bf033938d053e3e24fbd6ee7c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.cc/pify?keyword=cannibal+ferox+parents+guide', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of a link farm indicates an attempt to distribute malicious content or conduct phishing operations.

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.cc/pify?keyword=cannibal+ferox+parents+guide In PDF document text
    • http://files.9-r.com.au/uploads/1/3/1/4/131454316/82a2f2dd.pdfIn PDF document text
    • http://soruweja.calgarylaughteryoga.com/uploads/1/3/1/3/131398455/7897611.pdfIn PDF document text
    • http://lujez.pwdchicagoclub.org/uploads/1/3/1/4/131407089/fafipeva_nozisedojun_vatawule.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/1/0431/7760/7324/files/snapper_rocks_surf_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8690/9341/files/libros_de_algebra_booleana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/11072752351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8385/7053/files/business_law_bcom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/pozovitavenunawuvapekaxaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7011/8302/files/vofawutaxutapidisituva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6897/1415/files/kalphite_queen_guide_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4216/7194/files/laxadasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2167/2356/files/healthy_food_guide_fodmap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/how_to_filter_espn_articles_by_date.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4528/8093/files/15796922324.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 2

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_off0000e641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE641 5320 bytes
SHA-256: 84583ea03d6b9edf600d3d8d71e55a95e47235bbbd9b5aae6b37dca0d3280958
font_01_sfnt_off0000f862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF862 12156 bytes
SHA-256: 893d522d36a4703d19e8456096afa5b0c5fec63dca05f406a07ed9587bdf0da6

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