Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b03ee1d4faea70a…

MALICIOUS

PDF

77.1 KB Created: 2021-03-23 06:17:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6491853b7a35cc8fdfbbf4bf8e9832b SHA-1: 5645e051e54343fb73496e7b9fa411c157918eaa SHA-256: 7b03ee1d4faea70ab30c619c94bc175678087d1aa8bae0878cbfdcbb38d0e5fb
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for downloading cracked software, indicated by the embedded URL and a heuristic firing for a visual download button. ClamAV detection further confirms its malicious nature, classifying it as a phishing trojan. The primary IOC is the malicious URL used for distributing the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jumiwimov.ru/strik?utm_term=adobe+photoshop+cs5+crack+dll+files+32bit+64bit+download
    • https://cdn-cms.f-static.net/uploads/4486748/normal_603002d8b3db8.pdf
    • https://static.s123-cdn-static.com/uploads/4497109/normal_5fdce27bf286c.pdf
    • https://manatelagaren.weebly.com/uploads/1/3/1/4/131437493/8e9d4461173.pdf
    • https://cdn-cms.f-static.net/uploads/4465144/normal_601b016e408e9.pdf
    • https://tusozokusex.weebly.com/uploads/1/3/4/6/134678333/gobofogamare.pdf
    • https://static.s123-cdn-static.com/uploads/4500878/normal_5ffd5e76b1bc5.pdf
    • https://cdn-cms.f-static.net/uploads/4374364/normal_601dc35ce48c1.pdf
    • https://static.s123-cdn-static.com/uploads/4481993/normal_5fdf98f210e59.pdf
    • https://xubebedi.weebly.com/uploads/1/3/0/7/130776367/jowamokutemen.pdf
    • https://static.s123-cdn-static.com/uploads/4390052/normal_5fcb5b453b1bd.pdf
    • https://nazorokofewedu.weebly.com/uploads/1/3/2/7/132710677/7955875.pdf
    • https://cdn-cms.f-static.net/uploads/4467287/normal_5fe81b6a5a0ec.pdf
    • https://cdn-cms.f-static.net/uploads/4503578/normal_5fe9ca748c936.pdf
    • https://cdn-cms.f-static.net/uploads/4449781/normal_6022369c79475.pdf
    • https://static.s123-cdn-static.com/uploads/4444123/normal_5ffc90fdb08dd.pdf
    • https://tozikogok.weebly.com/uploads/1/3/5/3/135330875/3b8beff25c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wibedubosateg/bound_by_flame_feats_guide.pdf
    • https://s3.amazonaws.com/zamuriza/playing_card_java_game.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_off0000e75b.bin
adc0bfe0659608ecc1cf7158e75fdd2364ec3d23d17da10a61af302568d2140f
pdf-font-stream PDF embedded font (sfnt) at offset 0xE75B 6188 bytes
font_01_sfnt_off0000fc76.bin
e7d9df1befe030ae58e858261651338029955e1b4c6e1567dbf794f80e87c405
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC76 12192 bytes