Malicious PDF — malware analysis report

Static analysis result for SHA-256 86ee9bf7051ea674…

MALICIOUS

PDF

66.7 KB Created: 2020-07-28 07:52:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b4a5ee6f927c808f26508c3b58920f52 SHA-1: 682e520f3d0b91b300e1d7ed440db6b2c5c6813f SHA-256: 86ee9bf7051ea674db857f014ed54894b7812fd87b23718b5adb765a1fd29d6d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to malicious infrastructure. The embedded URL points to a redirector that appears to be part of an SEO-based phishing scheme. While no scripts were extracted, the PDF structure and linked URLs strongly suggest a phishing or malware distribution attempt.

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=age+of+mythology+chinese+guide In PDF document text
    • http://files.katedumbleton.com/uploads/1/3/1/4/131438759/4d5fb.pdfIn PDF document text
    • http://files.rkmirrigation.com/uploads/1/3/0/7/130738482/gudumixubuxafuxib.pdfIn PDF document text
    • http://files.leeannphotography.com/uploads/1/3/1/8/131856129/detatinolimivif-bupomo.pdfIn PDF document text
    • http://files.animalsmma.net/uploads/1/3/1/4/131453432/vulusagezov_tedasexupox_zasilokuzor_wuxeweves.pdfIn PDF document text
    • http://files.blacksheepstrong.com/uploads/1/3/1/6/131606186/5786388.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/1/0436/9347/3947/files/baluwoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19252536586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9699/8048/files/wirizadudusizarekese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5538/0630/files/pepiforegolomilagana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7303/4658/files/30706040333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jokixud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/69663621376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/benubojebexoreloruva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2825/6680/files/ledofalufudefu.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 7

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_off0000c491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC491 5104 bytes
SHA-256: 4eb6523c1c3e80ef48f0d3cd2d6c681f1b262bdb567e919272dd724346b0d4d3
font_01_sfnt_off0000d5db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5DB 12388 bytes
SHA-256: 53cc91a893ed2496ac8ef83fd83abf054754ab3416885c1b877ad1dc22bd3d7e

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