Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad41f42abce446fa…

MALICIOUS

PDF

46.6 KB Created: 2020-08-12 18:45:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fc317c4335149e5f8a5e3676c0381a72 SHA-1: 0a3400820a6e8496205560aceff2ce8f1d38b598 SHA-256: ad41f42abce446faa81396400200bf3c1141ebfe08363e0371224a6f726f291a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier as malicious and contains a link to a known malicious redirector. Additionally, it features a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The presence of these elements indicates a malicious intent, likely to lure users to harmful content or to manipulate search engine rankings.

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/wb?keyword=mpeg4%20h.264%20dvb-t2%20manual In PDF document text
    • http://files.emugs.org/uploads/1/3/2/6/132695519/a04b87d4.pdfIn PDF document text
    • http://sinarifoj.ellewyant.com/uploads/1/3/1/6/131606066/a4a88ad3bb506.pdfIn PDF document text
    • http://kevadidu.blackdiamondtri.com/uploads/1/3/0/9/130969985/9fea7f4e20b9d5.pdfIn PDF document text
    • http://files.sealsriflescopes.com/uploads/1/3/1/8/131856852/zekadimemabidavidox.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/1/0444/6869/9303/files/irritant_contact_dermatitis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4509/3533/files/33297770123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6069/6990/files/2d_gaussian_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/85333511192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2315/4847/files/everyone_everything_everywhere_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/meverisigigotumal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/59055271700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0911/3253/files/psychology_of_love_and_attraction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/7848/6933/files/77956094836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0737/7561/files/fixoroxubas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5265/2951/files/small_compress_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9151/6826/files/xenozinusoderebajob.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_off00006884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6884 5744 bytes
SHA-256: 74fe45f4e60685cab16b04b5597c9d216d0457b97c16cd5ca0e4a50f7a8d419e
font_01_sfnt_off00007c1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1A 15896 bytes
SHA-256: 2ec1f954b67e3a1bb1b0b3daa9c820a6ea3063fbf685d38662a0cd6fcd315d9f

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