Malicious PDF — malware analysis report

Static analysis result for SHA-256 c07707e683e87221…

MALICIOUS

PDF

36.7 KB Created: 2020-08-13 23:16:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e42e0b04dcda789688446c677dc794cd SHA-1: 5241c89d9700d77fc4bca79e50c714a744039d2f SHA-256: c07707e683e87221ba49289336174306eb4e585a8999c1ea6c6366c19ea74cca
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as search results, with the primary link directing to a known malicious redirector. The ML classifier strongly indicated maliciousness, and the document body, though partially corrupted, contains the malicious URL. The presence of numerous external PDF links suggests a SEO poisoning or link farm tactic to distribute malicious 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/wb?keyword=kenwood%20chef%20model%20a701a%20service%20manual In PDF document text
    • http://files.fit4lyfeathletics.com/uploads/1/3/1/3/131397938/2071295.pdfIn PDF document text
    • http://files.khatibenergy.com/uploads/1/3/2/6/132682076/lavinizi-kokekuwe-jusagusaxaperu.pdfIn PDF document text
    • http://files.cardifftherapy.com/uploads/1/3/0/7/130739212/remamiregut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6552/3870/files/atcc_animal_cell_culture_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4864/8354/files/wikovazizedisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1264/3223/files/types_of_aircrafts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6909/5590/files/campus_architecture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigemeziguvego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8860/0478/files/benivisifuvufojeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1430/7496/files/architecture_portfolio_for_job.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/the_matchmaker_s_playbook_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/wefuzixededesenexewigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9200/9365/files/gomovuwarejanexodezetuxur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66048758492.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000044fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44FC 5460 bytes
SHA-256: 9439f2c599b52c47136755f35f7cc205472d786eba04e5859952c9cb2b7b183f
font_01_sfnt_off00005777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5777 9444 bytes
SHA-256: 64d0f5bdec15ef2420e72fde5725a8ca6cf1df5aa88d7ebd6e43f50f8a670cf4
font_02_sfnt_off000077cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77CC 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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