Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c742f6d28b03f19…

MALICIOUS

PDF

43.5 KB Created: 2020-08-05 10:31:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0ee430d699f9ca282b9a44cebb8e3843 SHA-1: 12609d3bcd5214c892dbb1af889bef54c1b2a447 SHA-256: 9c742f6d28b03f19283845c21027819d55e14daeea40a5bba6d36a89ee1e3e6a
194 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains a large number of embedded links. One of these links, 'https://ttraff.ru/pify?keyword=toda+la+sangre+bernardo+esquinca+pdf', points to known malicious redirector infrastructure. The document appears to be part of an SEO link farm, likely intended to manipulate search engine rankings or distribute malicious content through a network of linked PDFs.

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=toda+la+sangre+bernardo+esquinca+pdf In PDF document text
    • http://files.julianashotelsaba.com/uploads/1/3/0/7/130739731/xoduvobefevujak_sibetusijasan.pdfIn PDF document text
    • http://files.mccarthyphotography.ie/uploads/1/3/1/6/131637240/1430911.pdfIn PDF document text
    • http://files.ctfarms-rabbits.com/uploads/1/3/0/8/130814124/2017379.pdfIn PDF document text
    • http://files.101american.com/uploads/1/3/1/3/131384663/3cc61b61a07.pdfIn PDF document text
    • http://files.firstchristianwinchester.org/uploads/1/3/1/0/131071157/4799940.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/1/0433/0687/7080/files/74133662670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4463/3756/files/48837931954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5714/3199/files/masaderamaravazaboza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/0733/1739/files/dc_circulator_route_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/35281626069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0758/9027/files/dinibibezowadadesonelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3468/files/21767088537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1184/1949/files/12114999903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8983/6697/files/39415241676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7047/8746/files/43331308398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/tinipoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/45185343657.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_off000067fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67FE 5536 bytes
SHA-256: b019dcf11855ea1de93c84aadd451a6aa56564f8e8ba45e7319f4ab52ce3f880
font_01_sfnt_off00007ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD0 11252 bytes
SHA-256: 27f423cdfc4f58c15f4f06ff1c48a5366efa75021d2db8ae62407646d8d315d0

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