Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c93dd4aae3fbd6…

MALICIOUS

PDF

49.5 KB Created: 2020-08-10 13:13:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3bed3eb7197d127e06e2cb3e341b5824 SHA-1: 0cf46894be66d9b3540d214837e6e1b1253c9ee4 SHA-256: f0c93dd4aae3fbd60a61f8c1b38ff16c8ce16261faddf2c44a72fec443d2e94c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. This suggests the primary purpose is to lure users to a malicious site via the redirector.

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=slow+dancing+in+a+burning+room+piano+pdf In PDF document text
    • http://files.joewillis.net/uploads/1/3/1/3/131379591/tafuzir-dozedox-mazinovaw.pdfIn PDF document text
    • http://files.grpastors.org/uploads/1/3/1/0/131070618/faripurewike.pdfIn PDF document text
    • http://faxov.mrjohnmiddleton.org/uploads/1/3/1/4/131406717/pagenotuvinaxepuxisu.pdfIn PDF document text
    • http://files.youthcoalitionfl.org/uploads/1/3/2/6/132682731/643958.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/1/0437/5497/9477/files/kubolixevutiwudofamoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3137/8590/files/33935526184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0210/1923/files/79955939511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1554/4737/files/serological_diagnosis_of_infectious_diseases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/92835544334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4181/5718/files/tesililenovapuwabepelenat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6019/1637/files/fegoneruzarixes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0854/6200/files/endometrial_ablation_procedure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5220/3161/files/bipemeginufedugadazadage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/tivojululiviki.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_off000083c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C0 5632 bytes
SHA-256: d62858f1c66770ee263d1ace5abbda7593e061fce6e712864c7282f38cece6fd
font_01_sfnt_off000096e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96E7 9852 bytes
SHA-256: da51d4073b99359bc6231a16a118a83eb8e24ac1c9e7cf606966a067bf95be05

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