Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c97c04264cb7c5a…

MALICIOUS

PDF

48.8 KB Created: 2020-08-14 05:47:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ac52a7a666503297f9932fa9e3976ab SHA-1: ecdbaa81a34e2aa1aa34a9fe45e96cbac797b826 SHA-256: 1c97c04264cb7c5a5c310018361863542521a4a6d97f7305b04c956b041bdb3b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which are designed to appear as legitimate PDF files hosted on Shopify. However, one of the primary links redirects to a known malicious redirector at 'ttraff.ru'. This indicates a phishing or redirection campaign aimed at leading users to malicious content. No scripts were extracted, and the document body was heavily obfuscated.

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.ru/wb?keyword=enfermedad%20de%20kawasaki%20atipico%20pdf In PDF document text
    • http://files.peschketruckinginc.com/uploads/1/3/0/7/130775992/vijinajus_kolep.pdfIn PDF document text
    • http://files.dallasadpi.org/uploads/1/3/2/3/132303007/pilamodekapigigowopo.pdfIn PDF document text
    • http://files.fevanimals1.org/uploads/1/3/0/7/130739239/jolukukejifar-dusapuvekitu-gisot-pemusikirupizam.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/1/0433/6379/5096/files/72214325373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5981/7117/files/7325542482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4916/2654/files/rutozigogixapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/8021/4678/files/ssat_middle_level_analogies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86562581376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/91373429562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/xuvemubivuwelajur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8090/7938/files/mofoxirabuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1300/3674/files/wejeloredebinetozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7133/0709/files/auto_transport_bill_of_lading_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/subosobipipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/karafukenurojakezawobuxu.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_off00007e59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E59 5384 bytes
SHA-256: 1bc2db7627d677c9be3fc2febf072fd9dc9f29618e2ca2805cf5b462350dc71f
font_01_sfnt_off000090a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90A3 11096 bytes
SHA-256: 71fa72e6b6e4d8f66bf3b8fd5b6dde4a3613f2fb0990915c3f7bf5de940249d2

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