Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f0130f51ad01045…

MALICIOUS

PDF

79.4 KB Created: 2021-03-24 16:06:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 21078b0b27babc637fe5d4aff8726605 SHA-1: b1988e30e8131ce87c21b04bd23329111ef765d2 SHA-256: 2f0130f51ad0104509bd2189b4d91e6102615643e6ce9c7a8f6f93848df805a4
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, suggests a lure related to downloading content, which is consistent with phishing or malware delivery. The presence of an external URI and the ML classifier's high confidence further support a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://jacksth.ru/strik?utm_term=romeo+x+juliet+ost+download
    • https://cdn-cms.f-static.net/uploads/4416153/normal_60460826a6249.pdf
    • http://tobufupevujuma.mygamesonline.org/betexipibigujusero.pdf
    • https://fukekagike.weebly.com/uploads/1/3/4/5/134587407/f6f01497de8.pdf
    • https://kezexawu.weebly.com/uploads/1/3/0/8/130814062/e6af2e.pdf
    • https://bokakarepexopo.weebly.com/uploads/1/3/4/7/134750167/xuridevulawapo-nejivajeb-winorozumo-wimipamosut.pdf
    • https://cdn-cms.f-static.net/uploads/4403539/normal_603a52ac3cf80.pdf
    • https://cdn-cms.f-static.net/uploads/4476927/normal_600c44b61e905.pdf
    • https://gepavemu.weebly.com/uploads/1/3/4/8/134861499/1eeb3.pdf
    • https://cdn-cms.f-static.net/uploads/4466676/normal_601e6d0b44166.pdf
    • https://cdn-cms.f-static.net/uploads/4472479/normal_6048a3eb3ba55.pdf
    • https://static.s123-cdn-static.com/uploads/4377371/normal_5fd06a9a4af17.pdf
    • http://vofufime.mypressonline.com/66700736377.pdf
    • http://xijivedijimidip.mygamesonline.org/5365671043.pdf
    • https://static.s123-cdn-static.com/uploads/4453743/normal_5ff5391040736.pdf
    • http://beririka.scienceontheweb.net/podogipuba.pdf
    • http://dumubemajizukov.medianewsonline.com/jerafu.pdf
    • https://panejukirid.weebly.com/uploads/1/3/1/6/131606092/5733361.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://widepidaba.atwebpages.com/ashrae_55_2020.pdf
    • https://s3.amazonaws.com/kufazete/5340786063.pdf
    • https://s3.amazonaws.com/ravuxudibure/australian_beekeeping_manual.pdf
    • https://s3.amazonaws.com/jifesu/36422361124.pdf
    • http://bafuwujix.atwebpages.com/98294720332.pdf
    • https://s3.amazonaws.com/zamemigojat/lost_camera_icon_on_android.pdf
    • http://romepasuv.myartsonline.com/55558802185.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec8c.bin
4adb0fe0a3a103c3cb148d49c83c49ccf3177f1f4a8e029c61ad0f238fbc78db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8C 5000 bytes
font_01_sfnt_off0000fd8f.bin
1d2ccef6c2f914b0fdda3a3390129fe586ffd051944774b481f36100fdf3df6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8F 10852 bytes
font_02_sfnt_off0001222b.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1222B 4324 bytes

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