Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5a65f9da1652fd1…

MALICIOUS

PDF

40.5 KB Created: 2020-08-02 04:33:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 90e7e7175da510522c22057399b36f2e SHA-1: 206df908f5cc7e87cc8cd781473ade6388873dfb SHA-256: c5a65f9da1652fd1d3d6bdd8dbe2edb59a07535ea193055b54bd7703b9cb15ce
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates that the document links to known malicious redirector infrastructure via the URL https://ttraff.ru/pify?keyword=section+32a+of+registration+act+1908+pdf. This suggests the document is designed to redirect users to malicious sites, 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.ru/pify?keyword=section+32a+of+registration+act+1908+pdf In PDF document text
    • http://files.staggerapparel.com/uploads/1/3/1/6/131607777/3682843.pdfIn PDF document text
    • http://files.sunmarketingsales.com/uploads/1/3/1/4/131483391/990c5272d536145.pdfIn PDF document text
    • http://files.oace.co/uploads/1/3/1/3/131381781/parotakime.pdfIn PDF document text
    • http://files.littleheartrocks.com/uploads/1/3/0/7/130739916/pafuf-gijuzej-xubura.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/1/0433/1126/7990/files/1784249686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4795/0248/files/44382176086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7202/8823/files/64134999285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/59496038995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0638/5558/files/50388703254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3128/1312/files/wataxulupowok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9765/1352/files/rajud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7865/5903/files/ribad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xewujixamugovaginebutomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6577/6030/files/10009054624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3381/1351/files/11183876979.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_off00005dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC6 6236 bytes
SHA-256: 573a61bd5f5332ad1130289ef63185246d4a4dab4c7f6ea10df380eb9f9a0383
font_01_sfnt_off00007306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7306 10000 bytes
SHA-256: 3d7367b519b313ad5ab986f9c0908452066aff29a914124e4fa221405b8420f8

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