Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cbf9356abe4169b…

MALICIOUS

PDF

65.7 KB Created: 2020-11-25 16:12:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 879f6c6f15b9318a7e8dc7cddeb10351 SHA-1: d39e58d47987141385c482a2867241b1205b4fda SHA-256: 6cbf9356abe4169b324fe583298463ceed4bc7a17254319e7ab8cbde1e70c589
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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://traffmen.ru/strik?utm_term=impulsive+force+model+worksheet+3+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4501975/normal_5fbaac7ec0df0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388050/normal_5fba268d6a08d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478688/normal_5fb49c9835300.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446394/normal_5fb60ba198cf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371800/normal_5f8a6188d5f15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387424/normal_5f997a061acef.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lipekipuvenuji/citing_a_journal_article_online.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/94236265922.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/thong_song_sisqo.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/ff14_alchemist_levequest_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/mua_ban_net_oto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/980b5361-7cdd-4265-89ff-0a031c7af33a/faximaronugozizurifovez.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

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b37c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB37C 2992 bytes
SHA-256: edd424983f26be20fe4524b63d3962b9ffde98ad4b3d2d33b4321fc5901b9949
font_01_sfnt_off0000bfb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFB9 5712 bytes
SHA-256: 2d6be96381299ab91dbc39df35f83249e86e2791b7584497867764fa89afab79
font_02_sfnt_off0000d315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD315 12340 bytes
SHA-256: 411162d4e6e1567e0de02209ac6764b828c40447ca6769ce33d5ad69d4b505d9

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