Malicious PDF — malware analysis report

Static analysis result for SHA-256 793c6d4cd7d36a48…

MALICIOUS

PDF

77.0 KB Created: 2021-02-23 00:56:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-14
MD5: 6c5fed4e252c2ab8893eaa598aaa935e SHA-1: 3987bb6fdcb050e77b9e85321ab5593afbc5fd35 SHA-256: 793c6d4cd7d36a48cd2f4fd069ca54016cb7d52afc726f9d6a73f04a657f6b11
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/strik?utm_term=kitchenaid+electric+stove+double+oven In PDF document text
    • https://vufumepuzatine.weebly.com/uploads/1/3/5/3/135335191/960601.pdfIn PDF document text
    • https://rozuguki.weebly.com/uploads/1/3/0/7/130775318/6032002.pdfIn PDF document text
    • https://bigonokefexix.weebly.com/uploads/1/3/4/5/134518339/9488770.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467577/normal_600345331bf23.pdfIn PDF document text
    • https://serirufudo.weebly.com/uploads/1/3/4/7/134712976/7074467.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449419/normal_5fc7d85a220b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501962/normal_6019787144075.pdfIn PDF document text
    • https://nutovavodus.weebly.com/uploads/1/3/4/0/134012609/bed4010.pdfIn PDF document text
    • https://cdn.sqhk.co/merabuvi/tge5NWw/one_good_turn_movie_norman_wisdom.pdfIn PDF document text
    • https://cdn.sqhk.co/pefisemise/fjg6hbE/waxuberubapedatumo.pdfIn PDF document text
    • https://cdn.sqhk.co/fubemabofof/ejhghJC/oof_button_meme.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489058/normal_5fe3a902f17ca.pdfIn PDF document text
    • https://cdn.sqhk.co/kizusuvut/hc0t8uY/cellular_plus_shiloh_billings_mt.pdfIn PDF document text
    • https://cdn.sqhk.co/fasotaluvose/03MjfSC/3057707649.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427274/normal_60162fc51497c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lanaladu/86803270949.pdfIn PDF document text
    • https://s3.amazonaws.com/pulujolatepuv/brookstone_projection_clock_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/forces_and_motion_basics_phet_simulation_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/free_slideshow_template_final_cut_pro.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_off0000f0dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DD 5196 bytes
SHA-256: b42d543befa8f8e613ab4f8df546c8d02cd2d3286419b50890bd2912539b7031
font_01_sfnt_off0001028c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1028C 10696 bytes
SHA-256: b4fecd178ee15a0de79331fbfd8a0e02be2f1d6bed5e623d99f6471092ad3bd6