Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fd4fbf6c507dc27…

MALICIOUS

PDF

47.5 KB Created: 2020-08-20 00:43:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a8a7a80e857498b09335efc604ac2cdb SHA-1: e14bd86ce8fd41488c74737393712f8f313cef8a SHA-256: 6fd4fbf6c507dc275c9ab4223a853913b1822f37f60194eda3e6df3b06f1a292
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirection and a link farm, with a primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure for an "invitation to meeting letter template". The embedded URLs, particularly the one to ttraff.com, are designed to redirect users to potentially malicious content, likely for phishing or malware distribution.

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.com/pify?keyword=invitation+to+meeting+letter+template In PDF document text
    • http://sizukewix.7240club.com/uploads/1/3/1/4/131453060/xelodate_wesofufo_duvotumilokob.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/1/0436/0008/5160/files/beatport_top_100_s_july_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1279/2225/files/agile_scrum_master_certification_exam_questions_dump.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/vuzeka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7848/3096/files/borefukulemizuzipoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9628/6119/files/anatomy_directional_terms_practice_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/vevatikulutuzeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/49749172078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/48969068118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/absorption_chiller_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/47040140334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1424/0931/files/joel_osteen_become_a_better_you_free_download.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 2

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_off0000754f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x754F 4956 bytes
SHA-256: 892cd93613d1586ebe7b4e95d781fffc5d5677157c8471de1c3aefe6045f0ac8
font_01_sfnt_off0000861b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x861B 13676 bytes
SHA-256: 75cfbac0f3f5cebfbb14ef34f3ec06f06ad79cf7de390b7ce476a3177b0b0706

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