Malicious PDF — malware analysis report

Static analysis result for SHA-256 793ceb2c57732cc3…

MALICIOUS

PDF

69.1 KB Created: 2020-10-04 17:07:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-15
MD5: 98f33912de929e57a1fb63f5e9c6f940 SHA-1: 05919cf8f43445ead6c5f1d966537464ead4182b SHA-256: 793ceb2c57732cc3d14e483ae1cad1f1d64365bb77dbb18feab3168516b90646
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ggtraff.ru/strik?keyword=debraj+ray+development+economics+solutions+manual In PDF document text
    • https://site-1036661.mozfiles.com/files/1036661/wusajisazetejuzidavijimid.pdfIn PDF document text
    • https://site-1036995.mozfiles.com/files/1036995/wapekejujaguzanav.pdfIn PDF document text
    • https://site-1037187.mozfiles.com/files/1037187/47941013807.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/5154b176-777d-4d3f-90a0-501ebaa64687/88964712366.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a0b8cfc-8ded-43f9-9164-450d960166e3/gomujof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79ab29d8-7330-4920-aeac-17ca02f46000/69401140438.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08605aff-9e2b-4b58-a89f-f4614af17c4c/jedopom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6764/0470/files/31771642673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2984/3098/files/26978635011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1091/1140/files/johnson_county_ks_appraiser.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f8c6622-e12d-4d32-a0d5-b8232f6eb3a3/pitovew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b75e9fed-509a-4c7b-8560-0ad7a89c4d24/16421753022.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/977e4a7c-3530-45d1-a839-975dac3d5d5d/29640274162.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c18a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC18A 5596 bytes
SHA-256: 2058cf390054829fd8b824f029defa11f6eeddc7c20eac535872644468e86ff9
font_01_sfnt_off0000d48b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48B 16212 bytes
SHA-256: 94e84876415393161a8825c9e0ad26e794fb1e99186932a7004c5a25f68d20fd

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