Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5834050601ae9f6…

MALICIOUS

PDF

61.2 KB Created: 2020-11-10 11:14:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2deaad584bae2071030b73b31391a53c SHA-1: 92b29cbce6e1c8d1553163e3da96d25c43db32a0 SHA-256: f5834050601ae9f65884469f3a1216f24ff69ceea7e2a39f73f70cea6abdd207
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF containing an embedded URL that leads to a suspicious domain, likely intended to trick the user into downloading malicious content or visiting a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is likely part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffnew.ru/123?keyword=skyrim+vr+torrent+reddit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368958/normal_5f8a46f60018b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368500/normal_5f9565a64542c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384644/normal_5f984834cac0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420476/normal_5fa17aa951a5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392463/normal_5f9ede9922d4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381735/normal_5f9b271778038.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371788/normal_5f9edc1927ea7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388050/normal_5f98d0455c1ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468571/normal_5fa7f7901f3df.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/mozirolinitaje/latukodelesewadi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/091c1a62-2f3f-4354-93dd-9c5e32261ead/nepakasigisapam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba958aa5-f141-4ae3-9102-0d276f95cb1b/steinhausen_watch_pins.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aaca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAACA 4880 bytes
SHA-256: cef5509ef2964fe481b25fffb859ec5f9c67e0c046329592774913525678b9a2
font_01_sfnt_off0000bb58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB58 3720 bytes
SHA-256: 6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed
font_02_sfnt_off0000c6ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6BA 9692 bytes
SHA-256: 977bb23d2e56c4145e10e0ea707839201cf7b88540f97f27ea7c58e775902ee3

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