Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c2d28db3ffc0518…

MALICIOUS

PDF

42.8 KB Created: 2020-08-03 12:23:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 10c354e497a59d5b1cc9791ebe682265 SHA-1: 942a1778c8f41796d6ad3af0548ad2f5abef98d7 SHA-256: 0c2d28db3ffc0518961d730d1356961bff83269c10c379ec707ae884204ad5f8
194 Risk Score

Malware Insights

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

This PDF document contains multiple embedded links, including one pointing to a known malicious redirector at `https://ttraff.ru/wb?keyword=dialogue%20words%20worksheet`. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting an attempt to lure users to malicious infrastructure. The presence of numerous external PDF links and a redirector indicates a likely SEO-based phishing or content-scraping attack.

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=dialogue%20words%20worksheet In PDF document text
    • http://files.olneymdtravelbaseball.com/uploads/1/3/1/0/131070518/bipiwifidefej-wikuzudiw-virawimema.pdfIn PDF document text
    • http://files.vscommunityfest.com/uploads/1/3/1/4/131453081/9139585.pdfIn PDF document text
    • http://files.jamesebarrguitar.com/uploads/1/3/2/7/132740423/3346697.pdfIn PDF document text
    • http://files.nbmarysville.org/uploads/1/3/1/3/131379054/ladajatizani-vuwopu-buteto-xenakof.pdfIn PDF document text
    • http://files.wataworx.com/uploads/1/3/1/0/131070313/regufuvani-zeduvofogujalo-wotumigixume-xupidevolov.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/1/0427/6197/8023/files/8524490992.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/kupafus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7879/2869/files/nepek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0815/4008/files/puboguroxepuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2560/3488/files/4858657509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9276/3039/files/28_day_jumpstart_challenge_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3932/6361/files/jakokoranuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/97933399539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bibekejufalakudogaloseja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5757/0207/files/26446035501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3518/1724/files/rivelunito.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 6

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_off0000681c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x681C 5240 bytes
SHA-256: 9d71bec3cc47308c9d487d1c374f64c48dbc0030a1e2e46a8a119767e1c086ba
font_01_sfnt_off000079fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79FD 10856 bytes
SHA-256: 0df2afb6072ae04078ff19dd2b5d531b91032d5017b0f711b6fb87e24d15638f

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