Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7879efce9cfd7b…

MALICIOUS

PDF

88.1 KB Created: 2020-10-11 17:58:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: ba6bfe6ed986859519803688950377c4 SHA-1: 110a2d58a0cc551c41489bf4cb44f9b3481d69ea SHA-256: cd7879efce9cfd7bb876060c2a31ae96d696b96516a64616553852f892986386
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=crepusculo+2+online+latino In PDF document text
    • https://site-1036972.mozfiles.com/files/1036972/bawewusowowanikitezosuroj.pdfIn PDF document text
    • https://site-1038599.mozfiles.com/files/1038599/jazedebexa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/89d72f39-4ba5-409a-b132-d4b1b12077b7/77968101024.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/138d1500-e652-42bc-9dff-1a7d9b333bba/xopopigubebupodu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5161bcd7-132d-4678-afaa-2ef97a11c964/38342274304.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8f83950-18f7-4266-8123-898b2beb9aad/novitajiwek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5172/9574/files/80556270964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/0214/6212/files/in_equity_theory_individuals_assess_the.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e790c11-1c69-4861-9ff5-c48727bf2120/35478767132.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cffd54a9-71b5-4dbf-9d44-d524d7baac51/xivodidowanam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d63a73e-e8de-4273-9091-56e119212562/99704366898.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3be47858-ecdf-4a60-ae30-b305ea8b8de7/42644509916.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d1b921c-ab29-4a5d-bc17-7886dc6af88c/dijesupijaladetawap.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_off00010b6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B6B 4496 bytes
SHA-256: 34232a7709bbebef13766a2508264d039f39cd607fd515654e3fced80c867abb
font_01_sfnt_off00011b16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B16 4964 bytes
SHA-256: 30020401035e0d798d161e56c52232f2fd5d0f877587a37ded05d28faf95f030
font_02_sfnt_off00012c04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C04 11768 bytes
SHA-256: 3a64c479c3a3db76610afab6e904fa8caed95ede836c25a5eabce9e99a28c34c

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