Malicious PDF — malware analysis report

Static analysis result for SHA-256 86084f189dbb8774…

MALICIOUS

PDF

39.4 KB Created: 2020-08-06 21:29:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0999a951b8d8b0c1571d220a5d97f80f SHA-1: dab84bcdf7d1f17364e53963000dcb724abb8188 SHA-256: 86084f189dbb8774f31b4e82cb6806bbd1079bee3c8b51072671327a27975824
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though obfuscated, contains a URL that appears to be part of a link farm designed to attract traffic. This suggests the PDF is intended to redirect users to malicious sites, likely for phishing or malware distribution.

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.cc/pify?keyword=cell+cycle+diagram+pdf In PDF document text
    • http://files.oraclefitness.com/uploads/1/3/0/8/130814121/dabuniwusexufe_dulatuvilawes_kadugitodelekum_muvufuzade.pdfIn PDF document text
    • http://files.smiths2argentina.com/uploads/1/3/2/6/132695560/mugakebebip-rivupi-zirukulejozepe-xakenagenijux.pdfIn PDF document text
    • http://files.myfoodresearch.com/uploads/1/3/0/7/130738719/fa4ddd56e.pdfIn PDF document text
    • http://files.royalanimalhealthuniversity.com/uploads/1/3/1/4/131437859/0d9a4a.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/1/0435/2638/9912/files/articles_rules_and_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/repeating_pistol_bloodborne.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/85356940779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3525/4170/files/tolupada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6766/9654/files/zikaxopolut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jenodilibaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3103/5032/files/31138087529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5071/1705/files/arabic_letters_and_pronunciation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8749/5322/files/lovudenesijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0281/3849/files/74367503681.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 5

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_off00005d90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D90 5304 bytes
SHA-256: cb43ea197ece8d855154a7acbda3eddc3bf196609b83576108924537420cb92b
font_01_sfnt_off00006f8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8E 9916 bytes
SHA-256: 7fe969ff7b2ec1de1639cfe1995b17cb2b436003c4cb6ed1ec0095e51791e050

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