Malicious PDF — malware analysis report

Static analysis result for SHA-256 a20e77d3866d4f1d…

MALICIOUS

PDF

86.3 KB Created: 2020-12-27 06:09:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: dcc0304630c965cb144c158ad72dddbb SHA-1: 439138fd9372a33d40684aa88aa24869299bf7c2 SHA-256: a20e77d3866d4f1dead48cf7c07995cdc72cc9517facaa4ff22c561b53723c4d
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 points to a suspicious domain, identified by heuristics as a potential phishing or malware delivery vector. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to 'Apk mania wwe 2k17', suggesting a lure to download a game, which is a common phishing tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffi.ru/123?utm_term=apk+mania+wwe+2k17 PDF link annotation
    • https://cdn.sqhk.co/minamojazi/6Lgigc0/warfare_global_operations_pvp_online_shooter_3ds.pdfIn PDF document text
    • https://sobuxiba.weebly.com/uploads/1/3/4/8/134867950/xapemovuwilebuparid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459164/normal_5fe58ba1732b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487647/normal_5fb67a329f0ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454825/normal_5fd09d7d0881d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370278/normal_5f9142ee37b79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393890/normal_5f941bc883821.pdfIn PDF document text
    • https://bizidijekivaza.weebly.com/uploads/1/3/4/5/134502856/452b1192f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464522/normal_5fb7e3605e145.pdfIn PDF document text
    • https://fenawivo.weebly.com/uploads/1/3/4/0/134000055/fbb67ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470024/normal_5fd84d26322d8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/8c70bc38-e874-421a-8c7d-235726278202/neposojemob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1604264-96ba-466d-9a12-c14c439a6789/56670588595.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bdeb743-8a2d-4ae3-8747-2aa30a5f4a69/62109515749.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84a198b5-efd7-479b-b349-f487ac8dc908/34714801121.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10710 4668 bytes
SHA-256: 9eaff5a325f8135b7d1af52e1affbcb785e17cd9adf8ffabe84eefdaf7ae9725
font_01_sfnt_off000116da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116DA 12148 bytes
SHA-256: a3e4bc330fff84f455504e0c5c5f7205763b01c183040a4d848b2d900bfb328a
font_02_sfnt_off00013e1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E1C 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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