Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c48bf73b7f802f9…

MALICIOUS

PDF

63.5 KB Created: 2021-01-13 22:45:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 09fcf8a6675045dac6726ab9cfcfa400 SHA-1: b6276ca24bca7510c61df0d0874df4f77b92e756 SHA-256: 6c48bf73b7f802f9981508e0207fdc6e660a98242c930ad61e7c885a6ab73d11
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The sample is a PDF document that contains embedded links designed to redirect users to malicious websites. Heuristics indicate that these links are part of a phishing lure, specifically an SEO-based redirector for a fake free download. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=construction+project+management+a+complete+introduction+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4469863/normal_5fdc41252d02a.pdfIn PDF document text
    • https://site-1177660.mozfiles.com/files/1177660/9236689423.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416136/normal_5ff29a4756174.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405186/normal_5fee2580eb6ab.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/9Thdric/baseball_9_innings_2011.pdfIn PDF document text
    • https://site-1173482.mozfiles.com/files/1173482/81559485739.pdfIn PDF document text
    • https://cdn.sqhk.co/komajekolino/gcSz8gi/72100516375.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409257/normal_5faee01c85b2a.pdfIn PDF document text
    • https://cdn.sqhk.co/murofoli/hdBjfha/live_neon_wallpaper_apps.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413455/normal_5f9b3cf3d45ae.pdfIn PDF document text
    • https://cdn.sqhk.co/gikunixa/dFeLVgf/jepisosasuvu.pdfIn PDF document text
    • https://cdn.sqhk.co/giwumazusew/iiiGjfo/wolesafirikusowepalegad.pdfIn PDF document text
    • https://site-1171105.mozfiles.com/files/1171105/briton_996_door_closer_data_sheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bbbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBBB 5456 bytes
SHA-256: c7bb41a3969dc42850882830539f331dd057ab9750fde78528de57db65348929
font_01_sfnt_off0000ce31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE31 10052 bytes
SHA-256: 95d5f2509dfdc82373b81f12bbead35dfa1ad79211f6bbe1bcb87e5631a266b6

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