Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2b0c5c533f6b0cb…

MALICIOUS

PDF

54.7 KB Created: 2020-08-07 05:40:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 46204975e9a9ff35c722c7cec071126e SHA-1: 27149acbee2468804df7fc246719703fc857e993 SHA-256: d2b0c5c533f6b0cbb91082be9e2785e27f5d71a423badde989a04be59d3f4147
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, masquerading as a schematic, which is a common tactic for SEO link farms. The primary malicious link, https://ttraff.cc/pify?keyword=princeton+reverb+schematic+pdf, redirects to a link farm, indicating a likely attempt to manipulate search engine rankings or distribute malicious content through a chain of redirects. No scripts were extracted, and the document body is heavily obfuscated, but the heuristic firings strongly suggest a malicious redirector and link farm strategy.

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=princeton+reverb+schematic+pdf In PDF document text
    • http://files.spashphysics.com/uploads/1/3/0/9/130969190/xitasutapavojuxi.pdfIn PDF document text
    • http://files.mywright2bdazzled.com/uploads/1/3/1/1/131164531/velumuzariboxudikun.pdfIn PDF document text
    • http://files.protectthegame.com/uploads/1/3/1/4/131483020/vobatel.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/1/0431/1321/8210/files/git_mergetool_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/xivilopiwubotawalupej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7348/files/muwudikopubidakod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2878/1988/files/57686535548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9328/7331/files/7955679785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4074/3329/files/62629849946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5824/9376/files/90553974944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/76284996460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tazoxusejeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3469/8147/files/46657788892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4071/0566/files/surakogasomefemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/lunevuse.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 8

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_off00008ae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE4 5352 bytes
SHA-256: 1854cee64e1a644e949252e680f6491e10d1d28c9e2e8c18b590357120cb1a9e
font_01_sfnt_off00009cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CD5 10264 bytes
SHA-256: 69f62f8e12a5e58803ef6143bf2d998d4fbd3d08eafdc36cc267b5dde0d70f28
font_02_sfnt_off0000bff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFF1 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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