Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd71dc103a18d9e7…

MALICIOUS

PDF

54.0 KB Created: 2020-10-23 02:52:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: c6ec9983d141467ba3d2defca95e0f09 SHA-1: e216a205491ee8c38ce53333fda63884b643d726 SHA-256: cd71dc103a18d9e7f67fd241fc28bdbe1ef8aea49e9b3be88792c9f377f5fab0
194 Risk Score

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://gettraff.ru/strik?keyword=quedate+conmigo+los+novatos+de+rio+n In PDF document text
    • https://tijujuvuxerupuz.weebly.com/uploads/1/3/4/2/134236121/7055231.pdfIn PDF document text
    • https://folukufisika.weebly.com/uploads/1/3/1/3/131384255/gogowitijunamila.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372737/normal_5f90090fafebb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366654/normal_5f8f5ff128277.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385213/normal_5f91fd82794d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f8714a076c85.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/1/0505/0184/5162/files/scarificator_manual_leroy_merlin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2100/8535/files/the_godfathers_revenge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9037/0975/files/moen_a112.18.1m_shower_head_remove_flow_restrictor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1572/0093/files/56117339753.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/75473869119.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/wiczenia_gramatyka_angielski_czasy.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/zesakubutixuxafofemixu.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/gumuxebisi.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/24874540627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8014/6343/files/algebra_1_unit_4_test_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8365/1990/files/66453773169.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000652f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x652F 5380 bytes
SHA-256: 0b847d0ae9e6e690b401ac30317919a32a9cd1b2166e91edbca290361470c755
font_01_sfnt_off0000775d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x775D 6748 bytes
SHA-256: 0077eec8b08b4f7d59ecbd38e2ee6f17f75561a281be48e4672265ea855fc392
font_02_sfnt_off00008d30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D30 11784 bytes
SHA-256: 164f6292e6e593f17e979f182d76c69325c393d8c568c455dbf6991aa7c529ea
font_03_sfnt_off0000b374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB374 16196 bytes
SHA-256: 8f0e4cc40e189f844ba505870c5743bf61ee9cdf6cb8b14e370866b3c0b868e2

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