Malicious PDF — malware analysis report

Static analysis result for SHA-256 a76d262648b43db0…

MALICIOUS

PDF

68.0 KB Created: 2020-11-26 16:02:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1c7fb67108589c41706ed329afe702b SHA-1: 1e8bd79476e4c8857dccc45bcd6f5ec75386b51b SHA-256: a76d262648b43db078e1be00c04782facd91eaa67627cfe3dac3ce21ff6029ce
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL, 'https://trafftec.ru/aws?utm_term=offline+rpg+android+reddit', which is likely used for phishing or to download a secondary payload. The document body contains obfuscated text, suggesting an attempt to disguise its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafftec.ru/aws?utm_term=offline+rpg+android+reddit
    • https://cdn-cms.f-static.net/uploads/4384459/normal_5f96bd78928ab.pdf
    • https://cdn-cms.f-static.net/uploads/4489992/normal_5fafd2f59b961.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/47b856af-a47a-4d70-bb82-de404220865a/letodopikuw.pdf
    • https://uploads.strikinglycdn.com/files/a5c9ecc8-e81a-47de-9d2d-216f3c7c152f/fire_emblem_akaneia.pdf
    • https://s3.amazonaws.com/dukexajuj/8903821124.pdf
    • https://s3.amazonaws.com/kijelopazekune/lejatofexemekuvuduto.pdf
    • https://uploads.strikinglycdn.com/files/25308248-4806-4723-9c42-9669adc8c741/family_feud_casting_call_2019.pdf
    • https://s3.amazonaws.com/vifusupegiza/16930617363.pdf
    • https://s3.amazonaws.com/dozuga/kagafejenase.pdf
    • https://uploads.strikinglycdn.com/files/263d151b-d886-4f77-813e-02c8645e5da3/lisivaminadavirusirexava.pdf
    • https://s3.amazonaws.com/nodetuxapabara/adam_6051_software.pdf
    • https://uploads.strikinglycdn.com/files/d42fe7f6-01a3-4824-a97d-e68152d5c191/27832560381.pdf
    • https://s3.amazonaws.com/wupixufekijax/robotics_simulation_software.pdf
    • https://s3.amazonaws.com/leributafa/cockapoo_puppies_illinois.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ac0b.bin
2037c64cd1eff78b1d1ea0813f0c14e9805de64112a79646d63d2d784a3f1b23		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC0B 2952 bytes
font_01_sfnt_off0000b691.bin
e029ceaaea3bece995c5782a5368daa10d6aa6dcc5dedcf1315756f1db2a3866		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB691 5056 bytes
font_02_sfnt_off0000c7d2.bin
805a7d22bcbac287fb573d995000a6156c3e22082611617ffc5c4aeb400fb439		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D2 9916 bytes
font_03_sfnt_off0000e9c9.bin
87969e19282840c6cfe4e77bd104ae2bbbd4c1422ba5f0a2566a5d6ad121aec2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C9 16816 bytes

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