Malicious PDF — malware analysis report

Static analysis result for SHA-256 9591be728323b3de…

MALICIOUS

PDF

43.7 KB Created: 2020-08-12 08:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75fdbcd6fd4ec276c6c71ee33f7a46a6 SHA-1: 789bf5569f706b283bb11dede16d2ae7874dfe43 SHA-256: 9591be728323b3de6be4422fcdc02c7c508dfe69751a2654dc14024d02f407b0
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO spam and phishing. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=reasoning+and+computer+aptitude+questions+and+answers+pdf'. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a lure to download further malicious content. No scripts were extracted from this sample.

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=reasoning+and+computer+aptitude+questions+and+answers+pdf In PDF document text
    • http://files.gypsygeorge.com/uploads/1/3/0/9/130969340/tawejakomigedapiziz.pdfIn PDF document text
    • http://files.sammybeaugard.com/uploads/1/3/0/9/130968972/tukojibetezemiwotuw.pdfIn PDF document text
    • http://files.kurtweissgerber.com/uploads/1/3/1/0/131069819/gibapalarifirose.pdfIn PDF document text
    • http://tuxojufo.pittsburghighschoolband.org/uploads/1/3/0/8/130874493/4658262.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/1/0431/8488/1827/files/panep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ninitegabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1935/4791/files/wonijoguzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0825/8211/files/data_analytics_made_accessible_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9816/7713/files/jofirugot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1161/8462/files/motulek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8667/4088/files/bunsenbrenner_fhrerschein.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6545/8336/files/ugly_book_electrical.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/3366134807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1753/3597/files/tofipoburim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/seporediniworajijate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fapodepemiretewuroraga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/furosesamipuramef.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_off000066a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A9 5668 bytes
SHA-256: 99beaafb9f6fc39145325e7355ff2479b12b9495e38860fb53323a70c11a0545
font_01_sfnt_off000079ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79EA 11760 bytes
SHA-256: 28e964b1f0b9aaf2be07ad1086d910a8f4824f28eb0d4bc7abdb6af9da4f05fd

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