Malicious PDF — malware analysis report

Static analysis result for SHA-256 02b24b85809ffd6a…

MALICIOUS

PDF

46.1 KB Created: 2020-08-20 00:40:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c3fb9b538cdb88e19dbaeb10135fd7d6 SHA-1: dc8c75f36a721c67545b651a9c24f7a58e127502 SHA-256: 02b24b85809ffd6aeefed0a50f366786058232f92856bfeefc9bfa3a743b4f85
162 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains text related to 'free messenger for pc windows 10' and the malicious redirector URL, suggesting a social engineering lure. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm strategy to obscure the final malicious destination.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=free++messenger+for+pc+windows+10 In PDF document text
    • http://kaluxokuk.embracebotanicals.com/uploads/1/3/0/8/130874277/1907118.pdfIn PDF document text
    • http://dabib.patelp.com/uploads/1/3/0/8/130874218/9e22ff10a207a.pdfIn PDF document text
    • http://files.carolgrice-curran.com/uploads/1/3/1/4/131407089/f46e45419816.pdfIn PDF document text
    • http://files.runningembers.com/uploads/1/3/1/4/131406885/991a91f4d9a3.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/1/0431/5106/5243/files/zirirupanexuvabovajibivop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1819/7912/files/91785450778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3970/9589/files/diabetes_type_2_diet_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0263/2104/files/que_es_la_angiogenesis_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1746/9080/files/lejigelab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6593/1936/files/95999192316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2992/0930/files/bedtime_bible_story_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3448/3616/files/causes_of_protein_energy_malnutrition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0452/5720/files/89358174165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7602/5510/files/5979851004.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 8

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_off000075c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75C9 5472 bytes
SHA-256: 3e875829a41cff250a54a1afd99ea8fbec334643b22feac92417e4bc188cc2c3
font_01_sfnt_off0000886e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x886E 10388 bytes
SHA-256: 840d1b33ab7b2c07e07da79df4e62c5bd32ccd559397953844f484edbb85acda

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