Malicious PDF — malware analysis report

Static analysis result for SHA-256 257c94a7f2539685…

MALICIOUS

PDF

48.1 KB Created: 2020-07-29 19:48:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b1db37b885ce691d88e6233e84425738 SHA-1: e084e41c7153e3d3213e0229cee94f2f7f632f92 SHA-256: 257c94a7f25396859fba2fca811a1a6988b530643aef9eb6e482de0eca99288a
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'ttraff.com'. This indicates the document is designed to lure users to malicious sites, likely for further exploitation or credential harvesting. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to improve search engine ranking for malicious 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.com/pify?keyword=advantages+and+disadvantages+of+probability+sampling+methods+pdf In PDF document text
    • http://files.rockanieguitars.com/uploads/1/3/0/7/130775174/xowelinakox.pdfIn PDF document text
    • http://files.naturesblissjamaica.com/uploads/1/3/1/4/131437276/7812803.pdfIn PDF document text
    • http://files.jakessalesandservice.com/uploads/1/3/0/8/130814676/xudanetir.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/1/0434/3165/7638/files/rezidek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/11026502619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8494/8380/files/gazowuvozejozofotaxuwil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2009/9488/files/41040751141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6513/0660/files/2806616916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9275/5103/files/zipogededebokatilodupik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1046/5698/files/butanasaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6463/1189/files/45733406878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7405/1491/files/22558572993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4915/6757/files/toxibunikudiruwel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5298/2684/files/53859799716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2440/6933/files/gakizidirowagururudavawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0023/3112/files/7587236527.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_off00007c5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5F 5532 bytes
SHA-256: 2cee6ac6fa38323413aff2e96bfe51772336aed311e2f54626a502e3d5efc84b
font_01_sfnt_off00008f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F02 10312 bytes
SHA-256: 338d6b3dc65e50d978987e6f84fb84d330c738b9981922703e5080903a093389

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