Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6c325155de84584…

MALICIOUS

PDF

43.0 KB Created: 2020-08-23 02:00:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3c10371256ca99e436d1d6df5f13098c SHA-1: 54faceb2184d07f460dfc31288b931ed994364c5 SHA-256: c6c325155de845843aaef73f5a0b944bace140978e197f40184f8806ef9a54da
194 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, including one pointing to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains text that suggests it is a 'formal letter layout template', likely a lure to encourage clicks on the embedded malicious link. The presence of numerous PDF links, many hosted on Shopify, indicates a potential SEO-based distribution strategy. 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.com/pify?keyword=formal+letter+layout+template In PDF document text
    • http://files.rochesterjiujitsu.com/uploads/1/3/1/3/131398134/vovin_zexojajakivewo.pdfIn PDF document text
    • http://dedug.ambergolob.com/uploads/1/3/0/7/130739811/videjipeviripe.pdfIn PDF document text
    • http://tufup.mysideofthecouch.com/uploads/1/3/0/8/130814161/2ced0a0e30822c.pdfIn PDF document text
    • http://files.handhinsurance.net/uploads/1/3/1/4/131438539/mefezipopeke.pdfIn PDF document text
    • http://files.ncmilitaryoutreach.com/uploads/1/3/0/7/130775953/4647936.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/1/0432/4913/9880/files/speaking_activities_esl_beginner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6272/1688/files/arguably_by_christopher_hitchens.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/xisurusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7446/7478/files/vulosodoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3487/7850/files/website_design_templates_sketch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4040/7701/files/55559789909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4419/2935/files/74138605306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3767/1080/files/xapazugomafupan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/gw2_firebrand_pve_build.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/samefuwar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7049/6672/files/kagimaxevonidegopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7899/1513/files/anatomia_de_la_piel_y_anexos.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C71 4844 bytes
SHA-256: 3752371520c7d6f86c6e06c94dd29eddf8f4ccf973a869ffd582e5647da2d53f
font_01_sfnt_off00007cd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD7 9928 bytes
SHA-256: 6f53598f0449b53c4790cfa4fc556dbaaeeae570224631ebe1d155c844f10f64