Malicious PDF — malware analysis report

Static analysis result for SHA-256 86d65c4b04186dc9…

MALICIOUS

PDF

37.3 KB Created: 2020-08-27 13:22:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 07e22c9ca625d33fdb3b76cabea2a9f7 SHA-1: 13dcef8e1f719fe3a2b59039e7bba9ccb88e08c2 SHA-256: 86d65c4b04186dc9d4a7fcb98cfc73c3503c050513df66b7af5c1c61d734bd62
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to lure users with the promise of free content. This suggests a phishing or scam attempt, likely delivered as a spearphishing attachment.

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=passive+voice+modal+exercises+pdf In PDF document text
    • http://posal.reacheproject.com/uploads/1/3/0/7/130776454/5157845.pdfIn PDF document text
    • http://files.creative-change-management-online.com/uploads/1/3/2/7/132740464/1564157.pdfIn PDF document text
    • http://xuxusi.theartplacestudio.com/uploads/1/3/1/6/131607163/mezewiwigijapok_giretoketosuxot.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/1/0437/7857/2450/files/vector_infographics_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/58118610915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8040/8474/files/36315090754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1415/9521/files/66396798632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1236/6229/files/28286033042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/3690878589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/boruxunijutaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2922/8702/files/some_any_somebody_anybody_something_anything.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9167/3763/files/96178512455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3160/0031/files/totawes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/49385865572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/befubejijizikokunife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0685/9163/files/caracteres_japoneses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/86187089948.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 4

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_off00005478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5478 5428 bytes
SHA-256: e94bdd1f8652a3cc8948fbafe838061ced4cb0eddde5d7f4e44934f24d507a2a
font_01_sfnt_off000066e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E1 9840 bytes
SHA-256: cdd014853db5388c97a70fd60d9ee5c726e20cdab1e67f47634532b463fbdc09

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