Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b7790ba3f088ac8…

MALICIOUS

PDF

123.5 KB Created: 2020-08-05 05:04:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe339bf62d7d781a3afe7161e1174798 SHA-1: 2c20da2aec0f70cdf5d9f6faaf591e1ab8abb788 SHA-256: 9b7790ba3f088ac8a72fad9e455f2e37099c4d29294a73466ad396341a3d717a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a lure related to 'Alexander Graham Bell biography pdf' and embeds a link to 'https://ttraff.ru/pify?keyword=alexander+graham+bell+biography+pdf', which is flagged as a malicious redirector. The document also exhibits characteristics of an advance-fee scam lure and acts as a link farm, with numerous external PDF links. The primary attack pattern involves tricking the user into clicking the malicious link under the guise of legitimate content.

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=alexander+graham+bell+biography+pdf In PDF document text
    • http://files.eremiticservants.org/uploads/1/3/2/6/132682585/zamujezodib.pdfIn PDF document text
    • http://files.wbsenglish.com/uploads/1/3/1/0/131071043/1a27fc7b580.pdfIn PDF document text
    • http://files.terramutt.com/uploads/1/3/2/7/132710491/maxanarumifiruz.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/1/0436/0703/1966/files/ssh_copy_id_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5152/4001/files/38979245050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1729/8329/files/xulupig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6623/6826/files/kividonamawugux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/68542274034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/fosonapiretuvowexogadob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5095/7991/files/28335355132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5008/2202/files/mivonuzujuvop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9853/0201/files/uninstall_brew_package.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0512/4503/files/zobut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0315/0499/files/nokoxodetukeloxuzelut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/13138812829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/73944195873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9258/8184/files/pillars_of_eternity_collector_s_edition_guide.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 3

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_off0001a59b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A59B 5576 bytes
SHA-256: 37834366a7d88d9b57f044b62e3aaf59d8dde150ec79b0a2990cdac85969b67e
font_01_sfnt_off0001b877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B877 11456 bytes
SHA-256: e2837576b6b94820cb4069d4270e2dd8e19160bf3901939c3faf3426fd816fff

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