Malicious PDF — malware analysis report

Static analysis result for SHA-256 9978b5326557a15d…

MALICIOUS

PDF

41.0 KB Created: 2020-08-01 22:43:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 17fd18571942b301a5d47b00bd2fa224 SHA-1: 7bff798ee31d08737d8c5bcba3e04d1daa8cbeaa SHA-256: 9978b5326557a15d9bbca2ab2934527c87a83a5d92b6710f2a90ba07c58ca29d
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 indicating a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=razor1911+skyrim+update'. Another critical heuristic identified a large number of external PDF links, suggesting a link farm for SEO manipulation or traffic redirection. The document body contains text related to a 'razor1911 skyrim update', likely a lure to entice users to click the malicious links.

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=razor1911+skyrim+update In PDF document text
    • http://files.nataliemariaclark.com/uploads/1/3/0/7/130774994/puzatadulejuti-wetuwivikug-zizez.pdfIn PDF document text
    • http://files.newlifemobilityyork.com/uploads/1/3/0/8/130874691/jokafovu.pdfIn PDF document text
    • http://files.carlyletransformations.com/uploads/1/3/2/7/132712306/6145212.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/juxumadebamapetutorobegew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46456123156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/jukekebopejuwatogizej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6641/7571/files/takokanasilavetevifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9020/6119/files/54512074243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9964/3297/files/8760348962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1144/8729/files/34057874882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/nenejefat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6604/8165/files/torukesitogule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4205/4048/files/hey_daddy_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9755/4084/files/vafofatofeziviruwon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9132/9173/files/mejemutererizazinemamoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/nitro_free.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_off0000616f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616F 5504 bytes
SHA-256: c5318de6903cdfd372061e75e92e2212f09855a17f1fc62cfd589ac1e3427494
font_01_sfnt_off0000742c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x742C 10308 bytes
SHA-256: fb4d34a517cb949261bc6f2143a25212975a35ee30477c347bc8093514fbcc6b

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