Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f8ae624929d3fa9…

MALICIOUS

PDF

44.2 KB Created: 2020-08-08 23:44:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 92ee87e0ba1ba59dd29c86d0133365b4 SHA-1: f14893b7b0faaf3a2286737bda34f67649564759 SHA-256: 0f8ae624929d3fa916ee758b3589c65c50496d096ad3feb0f0058f4ea74a1e00
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, specifically pointing to a redirector URL. The document body also contains a call-to-action phrase and the same redirector URL, suggesting a phishing or scam attempt to trick users into downloading content. While no scripts were extracted, the PDF structure and embedded links strongly suggest a malicious intent to redirect users to potentially harmful content.

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=pathfinder+bestiary+pdf+download In PDF document text
    • http://files.sarahtorti.com/uploads/1/3/0/8/130873741/barubinajorara-nodomixudovorin-lujafanofuvuz.pdfIn PDF document text
    • http://files.clinicaespacosaudebeleza.net/uploads/1/3/2/6/132682892/2618356.pdfIn PDF document text
    • http://files.rinconcasa.com/uploads/1/3/0/9/130969703/rifomo.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/1/0428/1715/9335/files/60143830226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mujunevuduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2474/3591/files/arihant_integral_calculus_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3532/8663/files/gurawizaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8794/4094/files/68560709167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4183/3635/files/63503140726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1836/2781/files/car_suspension_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/51829719086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3255/9267/files/87463896104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/tapulodufew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9231/9138/files/tepibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9765/9294/files/agile_project_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5327/5546/files/bevetivupixaverukovopidaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9386/1279/files/14955468619.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A2 5464 bytes
SHA-256: 82f2090cdd8d2c393889facbd55fdcfaec03e6c6cd0b5fcdafe48db7137667e4
font_01_sfnt_off00007444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7444 15292 bytes
SHA-256: 3c6e38841fc1e53889826983ee82d77c10562733d712e48d3ab9595cd07fe90c