Malicious PDF — malware analysis report

Static analysis result for SHA-256 bca05e32017c888b…

MALICIOUS

PDF

83.0 KB Created: 2021-03-28 18:08:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89b153f8d6aaf8f4183f3da6c041aece SHA-1: 2d7439a4b44e93b4be74b6841de76a92ff9e7a08 SHA-256: bca05e32017c888bcaae7a519590863fbe4cf012d6fe88c9c07aec1bce871657
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a domain associated with phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. No scripts were extracted, but the presence of external URIs suggests an attempt to lead the user to a malicious site.

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://dafemum.ru/strik?utm_term=charles+atlas+dynamic+tension+bodybuilding+course+pdf
    • https://cdn.sqhk.co/jilebodetifa/Gshjnv4/kifunesuvakil.pdf
    • http://jolixasij.sportsontheweb.net/majesty_sheet_music.pdf
    • https://cdn-cms.f-static.net/uploads/4407327/normal_5fd10d2338e39.pdf
    • https://cdn-cms.f-static.net/uploads/4366632/normal_60489ae7b8ea1.pdf
    • https://mojavewebodaraz.weebly.com/uploads/1/3/1/1/131163943/8091613.pdf
    • https://cdn-cms.f-static.net/uploads/4475863/normal_603edf478ec18.pdf
    • https://cdn.sqhk.co/maweveju/azhfiiI/5788306097.pdf
    • https://dopakujovifoba.weebly.com/uploads/1/3/0/7/130739833/nobid.pdf
    • https://cdn.sqhk.co/gidagolusi/jajfia7/warcraft_3_reforged_tower_defense_maps_download.pdf
    • https://pavadugubuwab.weebly.com/uploads/1/3/4/3/134309483/wanazav_kadavelo_zozupu.pdf
    • https://static.s123-cdn-static.com/uploads/4426828/normal_5ff3c6061047c.pdf
    • http://jajokojunewi.mypressonline.com/advantages_of_computerised_accounting_system.pdf
    • https://cdn.sqhk.co/tatogevi/ccjcjhb/depivuguwijabiworigofo.pdf
    • http://rekijiwowak.scienceontheweb.net/61276133342.pdf
    • https://pepizowa.weebly.com/uploads/1/3/2/7/132711999/4848903.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fupanabivote/81721785204.pdf
    • http://koradanizepagow.myartsonline.com/deductive_reasoning_questions.pdf
    • https://9f349447-249b-4747-956a-316fe86e371b.filesusr.com/ugd/d2b720_3451718d230c41ae971115a321ce69a1.pdf?index=true
    • http://zalatikewal.atwebpages.com/42774914338.pdf
    • https://s3.amazonaws.com/norozovijalu/ruvadexidafimazipopedekit.pdf
    • https://8767aa75-4bd5-48c0-94ca-24e983238001.filesusr.com/ugd/debdc1_1c6e086d298848dd92954d715102d72a.pdf?index=true
    • https://s3.amazonaws.com/zijivevip/building_a_wooden_shooting_bench.pdf
    • https://s3.amazonaws.com/musokejixami/flo_error_gecko.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101d6.bin
55b1a9a8300c5bd0dde6e8bb5c7369c227e43df5287cc03a30e067b69d60c0df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101D6 5716 bytes
font_01_sfnt_off0001151e.bin
c29952f1ade6ae675552f63c8fe459828aebc270862eba53f874ad2d6c42f57f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1151E 11420 bytes

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