Malicious PDF — malware analysis report

Static analysis result for SHA-256 651dd469e87f785d…

MALICIOUS

PDF

36.1 KB Created: 2020-08-21 06:08:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac138ceac004f26fbe50855ea45b14d6 SHA-1: 6a3eea480bb31c47b3984acb761c96aae99e5a96 SHA-256: 651dd469e87f785d09fdcbc900ba0aa731a9c66bf6320be4db8e29415c6d6bcd
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to a 'bologna sausage crossword answer' and the malicious redirector URL, suggesting a lure to trick users into clicking the link. The PDF also exhibits characteristics of a link farm, with numerous external PDF links, indicating a potential SEO poisoning or phishing 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.cc/pify?keyword=bologna+sausage+crossword+answer In PDF document text
    • http://files.pitttheater.com/uploads/1/3/1/3/131383541/9297828.pdfIn PDF document text
    • http://fokovotik.emergefoundation.net/uploads/1/3/1/6/131636664/vunifafijonudeb_bodupojo.pdfIn PDF document text
    • http://files.corinneamelia.com/uploads/1/3/0/7/130775888/fivutuxera.pdfIn PDF document text
    • http://files.villagegardenshoppe.com/uploads/1/3/0/7/130738504/givox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/44435544288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/shell_in_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/42324192519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5762/6792/files/nogarenez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6148/6503/files/decimal_to_fraction_converter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1281/6034/files/avril_14th_guitar_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0014/3770/files/eosinophilia_causes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8292/3676/files/66733047245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9966/8121/files/48763872188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7707/4086/files/pikijidufutixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2275/9582/files/74129670634.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 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000430b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x430B 5000 bytes
SHA-256: dbdbdd12059e81c47a716822e16304dd7897c7dd4eded0967d83b31076545bd7
font_01_sfnt_off0000541f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x541F 9692 bytes
SHA-256: 75fa69447f708e51c053d413e0cba52e8695116732ed1ad77629ab1459e5068e
font_02_sfnt_off00007563.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7563 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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