Malicious PDF — malware analysis report

Static analysis result for SHA-256 556c424f139849fb…

MALICIOUS

PDF

77.0 KB Created: 2020-12-19 16:12:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb45d7a335497082f38d0e57d9cb5492 SHA-1: d210c23c35dada1d1caa7d490b551af0d517812a SHA-256: 556c424f139849fb83bf1f743e35042b169618d7e73245377498a99a344c5133
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains an embedded URI pointing to a suspicious domain, traffset.ru, which is likely part of a phishing or malware distribution scheme. The document body is heavily obfuscated, but the presence of the external URI suggests an attempt to redirect the user to a malicious site.

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://traffset.ru/strik?utm_term=sas+current+date+minus+1+day
    • https://static.s123-cdn-static.com/uploads/4390383/normal_5fc6cee13b4ee.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fceb9df703c0221cac6c897/t/5fd22773b0f0f842d7af638e/1607608180218/ink_master_season_11_contestants_pictures.pdf
    • https://s3.amazonaws.com/jazuravazaguz/99925341460.pdf
    • https://s3.amazonaws.com/salade/31397639139.pdf
    • https://s3.amazonaws.com/mujevubutukoxu/rush_limbaugh_flowers_promo_code.pdf
    • https://static1.squarespace.com/static/5fce0b38ea95a9497c047aff/t/5fd0762a89fd2c07d103d20d/1607497260446/jowizizagegozixufekum.pdf
    • https://s3.amazonaws.com/rubidokezive/52967457287.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf6c4908845d092483324d/1606380621517/2405941349.pdf
    • https://s3.amazonaws.com/fekaduvopigab/45251417167.pdf
    • https://uploads.strikinglycdn.com/files/7fefd3f3-5766-41e6-8672-6b4de1fad417/40016931715.pdf
    • https://uploads.strikinglycdn.com/files/d6c9247e-97e6-4346-8e11-ccc8fe5d7164/european_pharmacopoeia_8.pdf
    • https://s3.amazonaws.com/bitizopovopaso/was_genau_bedeutet_formulieren.pdf
    • https://s3.amazonaws.com/woxojuxafopuv/pokemon_reborn_starter_locations.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_off0000cf5b.bin
19be3adaddefa40e7b22011dfe28e13c1a0cbc193ac3a5d695ba38c3f559dab1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF5B 5312 bytes
font_01_sfnt_off0000e155.bin
414d786b459f0f5d2a731291ef1b870d88176140611ada2eab9f82aaf6e76e23		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE155 1940 bytes
font_02_sfnt_off0000ea8b.bin
eae134a2425b1b7be905fc76e1be2cec27a7ac71d8c28cc040a77d4cf7d3a9d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8B 11864 bytes
font_03_sfnt_off000111b5.bin
9ffc405fbed68b1ed35cf25504b2a045b5802e2074cf99e6920a228075e829fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111B5 16160 bytes

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