Malicious PDF — malware analysis report

Static analysis result for SHA-256 41ac193ea56414c2…

MALICIOUS

PDF

57.8 KB Created: 2020-11-23 04:08:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 3f1d7a1760f074f7b579d8fe0d97d7d0 SHA-1: 39d2fcf14885b900bd3a7f626aa6ac360bde9f3f SHA-256: 41ac193ea56414c2e4b74c768b0aff8532f7696e2400b8c1739af09f005aced1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ggtraff.ru/123?utm_term=huge+coffee+mug+gif', is identified as a redirector, likely leading to a phishing or malware distribution site. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 5

  • 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.
  • 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://ggtraff.ru/123?utm_term=huge+coffee+mug+gif In PDF document text
    • https://fileduwefevara.weebly.com/uploads/1/3/4/3/134384607/8958215.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403274/normal_5f9fbf5969fab.pdfIn PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/tamuzifab.pdfIn PDF document text
    • https://tatogupuragafa.weebly.com/uploads/1/3/4/0/134096405/fadijojebogot.pdfIn PDF document text
    • https://tizupokewa.weebly.com/uploads/1/3/4/0/134013062/jewat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415326/normal_5fa25b1fb64dc.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/baposivarabuj/22153756764.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/vofasaguveluwagipoku.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/sivusoratedepovona.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_off0000ac46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC46 4648 bytes
SHA-256: cf2117612cbcfcf942caa92999d127105ddacd99aad2a54d47c841075efeac25
font_01_sfnt_off0000bc16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC16 9148 bytes
SHA-256: acd786d60ff29b5a90749e3dac102327d7aba94831f31c5c6ef72e7ced2665c2