Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9ec33d7a0860d0e…

MALICIOUS

PDF

42.9 KB Created: 2020-08-04 10:50:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b507ccc8091a392d243c63c654d041fd SHA-1: 328929ec66fd44e341608fc61518f91464049b41 SHA-256: f9ec33d7a0860d0ecde29f6b01416aac49be403b5b09c3747e422da12eda7f08
234 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating a social engineering attempt. The document body text, though garbled, contains a URL that matches the redirector link found in the heuristics. The presence of a browser extension installation lure further supports the social engineering aspect, aiming to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.cc/pify?keyword=blank+bookmark+template+pdf In PDF document text
    • http://files.mistletoetom.com/uploads/1/3/0/8/130813899/gujozoxetenolixi.pdfIn PDF document text
    • http://files.kybercave.com/uploads/1/3/1/6/131606006/potoroleg.pdfIn PDF document text
    • http://files.aumyogaannarbor.com/uploads/1/3/0/8/130874154/3cd2f4d5eb4d99.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/1/0431/6977/5782/files/tezexazopal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1163/7401/files/punivilirolilopisererepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/0326/1606/files/autodesk_inventor_2020_tutorials.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4681/3346/files/find_someone_on_discord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5663/5805/files/sodedaruvewagutisiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/reading_quran_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9408/9635/files/zavidadetazulov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8500/2920/files/32325440921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/33889848214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6044/2774/files/runavazoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8188/3030/files/gebefuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2283550224.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_off00006a95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A95 5260 bytes
SHA-256: 0520079200ce13a741ba2e8dbe713455d8eff50ea5e0c35f24138f1d0810bd3c
font_01_sfnt_off00007c5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5F 10144 bytes
SHA-256: 988feceff7403f0373c86b595eb298020d2f8cd6114559e8fd1116342fc634e1

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