Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c9f100cbd23aa2e…

MALICIOUS

PDF

42.9 KB Created: 2020-08-03 10:46:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 56e6482fb42c06e29e8a3993ffa2e928 SHA-1: 3b916d294242cd4fdd48860a918e01a466a70368 SHA-256: 3c9f100cbd23aa2e2cf557efbc8b707d56b45133582e0aed47ae35996408c7ed
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 are disguised as 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 stage for delivering further malicious content. The document body itself is heavily obfuscated but contains references to these links, suggesting a link farm or redirection attack.

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=canon+ae+1+manual+pdf In PDF document text
    • http://files.sanantoniodryervent.com/uploads/1/3/0/9/130969354/12d9505.pdfIn PDF document text
    • http://files.claretebboth.com/uploads/1/3/1/1/131164572/xamibolaboba.pdfIn PDF document text
    • http://zadimu.backmunicipalconsulting.com/uploads/1/3/1/4/131409309/mitab-fokowagurelunem-wewodimi-posobodobisaxu.pdfIn PDF document text
    • http://files.diana-oasis.com/uploads/1/3/0/8/130813639/6408387.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/1/0434/4817/2710/files/dota_2_epicnpc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2425/9992/files/fawosudigomotigafilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/12593261719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/36356799488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5824/9376/files/17458386601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8531/5737/files/72798034809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8924/7894/files/87412976682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7554/2950/files/6663038399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/3268905068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7636/2150/files/62244409185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/sukad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1410/2950/files/16691822811.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 5

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_off00006a45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A45 4872 bytes
SHA-256: b6bdc8c4c05e76a081abcf1b8c82de16a5a7a9a99161bef7bdc2aad9bf144b0f
font_01_sfnt_off00007acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ACB 10624 bytes
SHA-256: 4b2c9ce3dfa4468d71c11b54debd596268c39b38f6fc1ffe2b0ba5a93dd11999

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