Malicious PDF — malware analysis report

Static analysis result for SHA-256 159775c9950ba675…

MALICIOUS

PDF

35.0 KB Created: 2020-08-22 22:39:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf34a775dbd02bf94a1d6dc5506a131b SHA-1: ff5b0db31d62ae2352d13051a3a91bae2bfa7c34 SHA-256: 159775c9950ba6753efc38dd892aa4279a6eda194866352ccb3bfd67d748bec5
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to ttraff.cc. This redirector is likely used to obscure the final malicious destination, a common tactic for phishing and malware distribution. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm designed to improve search engine ranking for malicious content, further supporting a phishing or scam lure.

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=bomberman+hero+rom In PDF document text
    • http://files.omprakashsingh.com/uploads/1/3/0/9/130969048/ea0ee81.pdfIn PDF document text
    • http://files.mothers-for-mothers.com/uploads/1/3/2/7/132712011/vubunujaduj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5670/9288/files/railroad_tycoon_2_strategy_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/chiari_malformation_type_1_measurements.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9218/1153/files/67041511218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2814/4543/files/44824464181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6373/6485/files/jenugobumipafapev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3646/7623/files/trigger_points_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/poxusulijupidokubeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1400/0538/files/someone_to_trust_mary_balogh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9621/5456/files/page_break_in_jspdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9454/0439/files/chemistry_syllabus.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000041ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41EF 4564 bytes
SHA-256: f06e4baeff3e220ab1b84fe9bcbff301a70c3d32f383a1a5022790061e538a63
font_01_sfnt_off00005119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5119 9588 bytes
SHA-256: 5697c8d4f2138885eb2d5a48ec48fc1152a5ac47f69bae0a0a7b4c6fbf67d902
font_02_sfnt_off00007179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7179 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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