Malicious PDF — malware analysis report

Static analysis result for SHA-256 863d9e5edc7d8317…

MALICIOUS

PDF

44.6 KB Created: 2020-08-02 08:19:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1bd71a538407a3825756e847b88e2de9 SHA-1: aba46af9d14aa4b9045dbe0e168b71cf99de1d3e SHA-256: 863d9e5edc7d8317fde541128afa1b94d5e2ee09825be8a1ecc586d79ce4179b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to redirect users to a link farm, ultimately leading to a malicious redirector. The primary redirector URL is associated with a 'free download' lure, specifically mentioning a 'Kubota operators manual'. This suggests a phishing or scam attempt to trick users into downloading further malware or engaging in fraudulent activity.

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.com/pify?keyword=kubota+operators+manual+free+download In PDF document text
    • http://files.pointmodelingagency.com/uploads/1/3/1/8/131856698/2743869.pdfIn PDF document text
    • http://files.canoetoneworleans.com/uploads/1/3/0/7/130775228/wadabinopagoza.pdfIn PDF document text
    • http://files.awdarcy.com/uploads/1/3/2/3/132303374/natelukuwo.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/1/0434/8729/7696/files/54315591338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5050/8194/files/jogozinepejezigujizujibip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2829/9428/files/tufirotawinitativez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5096/6950/files/pinukexofategoduxujata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7162/6652/files/86152992125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8150/4670/files/19100812891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2535/0301/files/muxapomapovekutetarigas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0935/9517/files/fimetus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/gopad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3744/7576/files/93847831178.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 2

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_off00006772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6772 5388 bytes
SHA-256: 06b37f89935870a84d0e1191e31a1066bfd3b36f064b9d5fcf10adc0c0cc07e1
font_01_sfnt_off000079c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79C0 14088 bytes
SHA-256: 5e5a35f65f5df415c8e74bbf5754fb6724f7e444e9634fcb496fa41af93a1f14

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