Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b2fc0d0c38a42d6…

MALICIOUS

PDF

41.4 KB Created: 2020-07-28 23:45:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f5b96e9c838e6351d71c1d221a32b1c SHA-1: 4f354da165120656d31c95f040b4412406cfe7cc SHA-256: 3b2fc0d0c38a42d64847c73763202060e76504917028432b9f1af8b7c838bbed
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which likely serves as the initial entry point for a malicious campaign. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content through seemingly benign PDF documents. No scripts were extracted from this sample.

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=afiador+faca+manual In PDF document text
    • http://files.andytheargumentativearchaeologist.com/uploads/1/3/0/9/130969878/bubonexera-faguje-vozatikex.pdfIn PDF document text
    • http://files.dawnstastyspoon.com/uploads/1/3/0/9/130968920/bajatutudofa_ponosiv_tonavo.pdfIn PDF document text
    • http://files.kaysfeld.com/uploads/1/3/0/9/130969923/4047092.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/1/0428/9835/8432/files/84312174386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8181/7494/files/sodiguvemesiwim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59022585862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5443/2410/files/peruboxuwuzinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/39453785990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0450/1922/files/7613396500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3910/3912/files/74365982566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1642/1529/files/42495448377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66264102559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/nekudevajojusakixib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/lepaxapipifezipodugelon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4449/4760/files/kopap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2139/3320/files/saviruzofamanolawumin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5388/3293/files/80051549542.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000614d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x614D 4664 bytes
SHA-256: ff3d900d7e6c249636bcd1361fa10d59371010ac04b6c0df8398ad46954919a0
font_01_sfnt_off000070f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F5 12488 bytes
SHA-256: 59918d2d0e4a2b667f9a745e1b66a268cdd5086cc153230e1050ab573b19ee89

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