Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbb0484f76d7ef24…

MALICIOUS

PDF

41.1 KB Created: 2020-08-07 07:46:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96661b5f64174573487a285d0499a26c SHA-1: 7d3e99460cd5d03a175b714336249f0f123a23fd SHA-256: fbb0484f76d7ef242e6097d30e4f43fab62646e0cf6477b0a9b00f27c8800da3
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=internal+auditing+process+pdf'. This indicates the document is designed to trick users into visiting a malicious site. The document also contains a PDF link farm heuristic, suggesting it's part of a larger SEO poisoning or link distribution scheme. The embedded URLs and the document body text, though partially obfuscated, reinforce the lure of accessing a document related to an 'internal auditing process'.

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=internal+auditing+process+pdf In PDF document text
    • http://files.derekleebarton.com/uploads/1/3/2/6/132682647/0b794ace5.pdfIn PDF document text
    • http://files.bradfordcattledogs.com/uploads/1/3/0/8/130874514/jepipijas_kavabevo_mogivuzu_losipufakoganif.pdfIn PDF document text
    • http://files.southernappalachianworkcenter.org/uploads/1/3/2/6/132683088/xitumasefarurol.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/1/0434/2733/2252/files/escala_curb_65_para_neumonia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6002/3711/files/physics_10th_edition_cutnell.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5588/1121/files/75803731180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/jopiwilijebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2380/9187/files/angular_download_blob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/cookie_clicker_cheat_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65107231385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/rebebimid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/nejenosajulow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8231/7991/files/22604681736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3461/3659/files/f_value_in_anova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/90070562883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5377/7047/files/31120626319.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 7

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_off000061f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F9 5260 bytes
SHA-256: c823111ed6f59bcf17db06ed13b89f1af51cfab5b532f79be953b0176db5f8b4
font_01_sfnt_off000073ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73EC 10500 bytes
SHA-256: c72e348e570eb128770c1745e25469d940a8ea4137964d19438cbd04692cc690

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