Malicious PDF — malware analysis report

Static analysis result for SHA-256 55647bdc94c5d15f…

MALICIOUS

PDF

44.9 KB Created: 2020-08-18 14:39:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 923ac5574a18e91230c9652e26cf745e SHA-1: f403b645541cf38f6bb6e3beec20457e4ee59fc8 SHA-256: 55647bdc94c5d15f341116d8ceb148f4c0488f06a8a912f299f2c69d3cc9500e
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the embedded links, however, redirects to a known malicious domain (ttraff.cc). The document body, though heavily obfuscated, contains the URL that is used in the redirector. This suggests the document is designed to trick users into visiting a malicious site by posing as legitimate content.

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=catheter+associated+uti+treatment+guidelines In PDF document text
    • http://pinox.dscampers.co.uk/uploads/1/3/2/7/132712315/wokisu.pdfIn PDF document text
    • http://files.motionimports.com/uploads/1/3/1/4/131452958/03ed593dcf264ea.pdfIn PDF document text
    • http://files.jeanetteluchesestudio.com/uploads/1/3/1/4/131482944/3000459.pdfIn PDF document text
    • http://pifoxajem.mrmaynardreading.com/uploads/1/3/1/6/131637016/welemuwamutato-xamuzitoxuf.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/1/0439/0912/0152/files/endless_alleluia_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9557/2126/files/vukuroxej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8605/2518/files/94377278676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/papixusisijipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6690/8054/files/24280930645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/sujitekufexixasimapaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8901/7497/files/33868715988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9671/0050/files/pebijevajexuxug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/93258282456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5662/5829/files/totekuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3234/5765/files/listing_inequalities_worksheet_tes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9028/8541/files/26883264546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4214/2358/files/rounding_decimal_places_worksheet.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 4

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_off000072a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A9 5260 bytes
SHA-256: 493d88c668fc5b94c5bdd0549d844def6a31a116e2fb9421c568d0e6fe62bd30
font_01_sfnt_off0000845e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x845E 9900 bytes
SHA-256: 96f40dcb3b99b098b8704a7aaab72944a7c3ee7ded30b9cd728da3baa3a6b189

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