Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7c07fb18eb19661…

MALICIOUS

PDF

50.0 KB Created: 2020-08-08 21:05:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dc13694bf5737f44bcdc7796d47744f5 SHA-1: ee8e18039f600a1b0d0384accd5e3f2a238f41ae SHA-256: c7c07fb18eb196618528bf7cf25ce34f4bb30467fa51679a3e3b391598ecfaf0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be part of this malicious redirection scheme. The presence of a large number of external links suggests a link farm or SEO poisoning attempt, likely to lure users to malicious sites.

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=validation+of+capsule+filling+machine+pdf In PDF document text
    • http://files.memorylanesg.com/uploads/1/3/0/7/130775634/dudinud.pdfIn PDF document text
    • http://files.jhsweatfoundation.com/uploads/1/3/0/8/130874246/nudug.pdfIn PDF document text
    • http://files.hello-baby-toys.com/uploads/1/3/1/4/131453807/4352687.pdfIn PDF document text
    • http://files.fpcmorganton.org/uploads/1/3/0/9/130968996/2f1fb34a1.pdfIn PDF document text
    • http://files.spartanmommyphotos.com/uploads/1/3/0/7/130775953/3399405.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/1/0433/6628/5480/files/80287590356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4912/2983/files/6133655570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5180/3033/files/xagorupivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2585/6662/files/bidayatul_mujtahid_arabic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/maths_textbook_for_class_5_maharashtra_board.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7077/4693/files/9945152712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1677/4054/files/mudevotexakijukudejekisiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/800-_662-_4797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5416/1310/files/maseteminixezazotodelil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2276/8535/files/sociologia_resumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5936/3496/files/ripexaku.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_off00008586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8586 5440 bytes
SHA-256: 38c7192ff0eebbbfee44948efd3df615e4dc8c6150dda89af37803a5a0ec7e3e
font_01_sfnt_off000097ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97EE 10320 bytes
SHA-256: 7b119adc3fd024ab5fa1d5e0c81406103c30bccedfcd142460328f8ac8479282

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