Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7ebd4d0fe44176…

MALICIOUS

PDF

42.8 KB Created: 2020-10-10 19:27:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 5963fd5161af9f402f5486abfce26888 SHA-1: 0dedfce8597945c186ccc5fce4473494d62f8797 SHA-256: cd7ebd4d0fe44176ab9e1fbef8bf739c8f681c51ddd9c506e4389ebefc4260fd
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://cctraff.ru/strik?keyword=hp+officejet+5610+manual In 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/1/0484/3657/6414/files/melilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/exponents_practice_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2852/8808/files/binubakux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9706/1531/files/97301992738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1102/3270/files/45382385755.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/718a4672-92f2-4d49-be83-10700eecc475/ruwuzo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95964403-840c-4a7b-a6d0-8e0668e77cfb/wuxor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e623d9a8-ac4f-4de2-80d4-5e5c8401d1df/vuxamesowarezizisewizefu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9405aac2-41a5-4ad4-bcd6-ac45f4929bd4/kopafo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8483506c-1fcb-4583-b1e2-677259663ac0/32405594394.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a68a1c03-d19b-47a4-87fd-0557d4b3d424/6769053295.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66082499-d107-4b5c-a300-7a23d6eb2ee1/navapevibajesekikuwib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6afb2fb-10df-471f-bafa-5eecdfe63f2f/61274625283.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a67c756c-fc61-46f1-bf0a-20402994ad29/bilanuvuxesila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/464d4f92-a66f-4612-b44c-5aff3d77a86f/sodudazefogizaxopidazud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09136c6e-b80c-4357-8312-3f94e44069ac/7593174610.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB9 3724 bytes
SHA-256: b64350c7bbdab9a8dc064f21a0594747627629593141b2bb6cd02da97e11ebda
font_01_sfnt_off000067f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67F7 5396 bytes
SHA-256: f30fc0ce307ca17223bfdaddebea2bc1b3db1c3cdd35760fec0fdb17529cfdef
font_02_sfnt_off00007a53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A53 10536 bytes
SHA-256: debcce99e7ff6b85e123a7cd36c3d665b99f546dae650137e7ee3aa0c1426769

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