Malicious PDF — malware analysis report

Static analysis result for SHA-256 a477cc8e4eeb2a79…

MALICIOUS

PDF

50.3 KB Created: 2020-07-27 23:57:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0fd13246f940fda6927430b51ad687fe SHA-1: e39a013873f6e318779699237e9572a48fead1f5 SHA-256: a477cc8e4eeb2a791a202f307d3952e4b1f5691e923defc5ca63f8963c850d50
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc). The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, appears to contain text related to a 'watch dogs 2 wrench cosplay guide', likely a lure to encourage clicks on the malicious links. The presence of a link farm suggests an attempt to drive traffic to malicious infrastructure.

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=watch+dogs+2+wrench+cosplay+guide In PDF document text
    • http://files.campkuringgai.com/uploads/1/3/0/8/130813362/a0af0d83e.pdfIn PDF document text
    • http://files.drjodidinnerman.com/uploads/1/3/2/7/132740234/280709d9.pdfIn PDF document text
    • http://files.addisonwilhite.com/uploads/1/3/1/0/131070713/27cd414989b31.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/1/0433/9505/5766/files/zupis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/38716699215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6790/0061/files/vegasotajunume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/guvoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6780/1749/files/xowimojasusoleferop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4731/3827/files/padesavuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1143/8752/files/gomakanuxubezisimedobuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/46561744846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5883/9203/files/4808777743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9007/4018/files/31745023445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8907/5102/files/pewugabilifefepudowadel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1234/1412/files/7283513762.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 3

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_off0000853a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x853A 5556 bytes
SHA-256: 569d6a9dbdd939f18e7e6d23cc3e07d9d5ce6f9e63ccc25df79ea839ad9e1515
font_01_sfnt_off0000982d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x982D 10548 bytes
SHA-256: 1d3cf16644288ba9c0057cc489794c2911209ca2f7abc2eba77198ec187aa588

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