Malicious PDF — malware analysis report

Static analysis result for SHA-256 913d68059508d6b3…

MALICIOUS

PDF

41.9 KB Created: 2020-08-09 04:59:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f394b6eba2262ca04f007437efb37fb5 SHA-1: 23cde6c9469fb602d1dcafe3f525e9f474e49069 SHA-256: 913d68059508d6b36f2d785b92e5d5439aea8241fa3428fa4a3313cd03e10b4c
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body also contains this URL, suggesting it is the primary lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for SEO poisoning or to host further malicious content. The ML classifier strongly indicates maliciousness.

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=course+2020+administering+a+sql+database+infrastructure+pdf In PDF document text
    • http://files.coloradokodaly.org/uploads/1/3/2/3/132302732/24480bddc062c.pdfIn PDF document text
    • http://files.en.serlab.com/uploads/1/3/1/6/131606175/muwafixibez.pdfIn PDF document text
    • http://files.jessiraeyoga.com/uploads/1/3/1/3/131379591/vunavupewov_tajawalusipu_xixom.pdfIn PDF document text
    • http://files.thevintagetoyman.com/uploads/1/3/1/4/131453329/9214584.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/1/0433/1667/4713/files/raxobabufikatisugenepoxip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6646/6216/files/geluwakazobonudovasawirof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4921/3349/files/dedid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3644/8667/files/luzotonaxogizur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6491/8165/files/43917941965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3971/8552/files/62249353395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7794/9848/files/read_malayalam_books_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mikawewetekiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5222/1091/files/xolataganefuseb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8178/5753/files/mewabopimuworajebuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5949/5590/files/75079169549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8020/2905/files/32193303709.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_off000063de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63DE 5920 bytes
SHA-256: 138383a65381be6920e9192c437ec9efb97717e013cbe3f3a991909fb594009e
font_01_sfnt_off000077de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77DE 10136 bytes
SHA-256: b6ffea23f9d39b0aa5c09929b8aee05056f36998afd18ecc3da20416d8756da1

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