Malicious PDF — malware analysis report

Static analysis result for SHA-256 0399c172bd066cf9…

MALICIOUS

PDF

69.8 KB Created: 2020-08-20 02:22:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: da3771603fa49d98e538401e3381a982 SHA-1: aee8d8c23b50535d6f4d2c6237640b8d3b2551a7 SHA-256: 0399c172bd066cf9fce546f8ea63ef3c7765be3e287fd4ddadbb671b259ba5bd
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of an SEO link farm. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary purpose is to drive traffic to this malicious site. No scripts were extracted, but the presence of malicious redirector links strongly indicates a phishing or scam attempt.

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=iron+deficiency+anemia+symptoms+pdf In PDF document text
    • http://tetaxazak.gosforddistrictmotorcycleclub.org/uploads/1/3/1/4/131454029/6532935.pdfIn PDF document text
    • http://files.kellykadera.com/uploads/1/3/0/8/130874329/tepulu.pdfIn PDF document text
    • http://files.countrysideanimalclinictooele.com/uploads/1/3/1/3/131380868/newufutuje.pdfIn PDF document text
    • http://files.parklanestablesponyclub.com/uploads/1/3/1/3/131379015/foboninimusuwate.pdfIn PDF document text
    • http://files.manzanitasplayschool.org/uploads/1/3/1/6/131637876/c3f6eb3c.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/1/0429/2149/2643/files/cardinal_numbers_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5393/0904/files/safaziruxanagem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0252/7897/files/83910710654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3973/6487/files/the_cask_of_amontillado_activities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6778/5884/files/gatadaxamenaxavuliseko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7416/4638/files/xewujavire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3241/1298/files/38334731979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6594/7798/files/theoretical_naval_architecture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4287/4278/files/24557522573.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 8

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_off0000d3c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C4 5308 bytes
SHA-256: c71e7f7cd4fa4984f99254e02b84ce7bc5b2875ba4d9c7f2dec49f3c17637024
font_01_sfnt_off0000e5bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BD 10656 bytes
SHA-256: 9fb4412cedb2feaefeafccaa795081ebaeec6b9a9cafbe8efbcb8be757df469f

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