Malicious PDF — malware analysis report

Static analysis result for SHA-256 890a2cccd6813bf3…

MALICIOUS

PDF

161.2 KB Created: 2022-05-21 00:04:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 7c86c0ee42b44dd5ff1c93d7aa3ee600 SHA-1: 12f196e0aacaa88dbc3956fe99b6fb2387e26e1a SHA-256: 890a2cccd6813bf36e5442bd9b59e94f3ad4febc74d92028d9191f6358500fd9
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The file was detected as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to a suspicious URL, which is a common tactic for phishing or malware distribution. The PDF structure also shows signs of manipulation with duplicate object bodies.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9893

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://lovig.co.za/XSRYdR1H?utm_term=design+of+machine+elements+8th+edition+pdf+full+version+pdf+file
    • http://pzhjintai.com/upload/files/2958046466.pdf
    • https://dasateju.weebly.com/uploads/1/3/4/5/134582383/lijude_kedupite_zarupakugu.pdf
    • https://sd.martabemitrasosial.com/editor/files/vonenafatizesexom.pdf
    • https://unstitchedutilities.com/files/file/vujifodu.pdf
    • http://terrietanaka.com/library/files/25806512567.pdf
    • http://sushi-belovo.ru/files/8172264272.pdf
    • http://milorem-service.ru/userfiles/file/95353375561.pdf
    • http://msnladyboy.com/ckfinder/userfiles/files/24866704038.pdf
    • http://tumakuruvoice.com/tumkurvoice/ckeditor/ckfinder/userfiles/files/16308077322.pdf
    • https://wibotutez.weebly.com/uploads/1/3/4/0/134012840/2332b3.pdf
    • https://nyig.com/files/file/30035921666.pdf
    • https://alfamar.travelshops.pl/userfiles/file/1132018787.pdf
    • http://barcodeegypt.com/public/kcfinder/upload/files/64693399535.pdf
    • http://braciszewska-klimek.pl/fck_files/file/52195473523.pdf
    • https://xotiroxo.weebly.com/uploads/1/3/0/7/130776105/lenote-jevoje.pdf
    • https://jenavuwex.weebly.com/uploads/1/4/1/4/141427598/3784629.pdf
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/8fc2a891a5ab7091175f9a0b1e5c76cd/bevomonisekuzobiw.pdf
    • https://fukerixinenila.weebly.com/uploads/1/4/1/2/141256212/xomozagan.pdf
    • http://kartonpier.com/admin/kcfinder/upload/files/gijupuso.pdf
    • https://weritudasokapo.weebly.com/uploads/1/3/4/4/134494226/3519000.pdf
    • http://newpacksy.com/admin/kcfinder/upload/files/ximibanigef.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00021887.bin
27d70bacd2f375cfb7897108b1cd2b7dc48919ce76c30cd2a0cf5c78f3621afe
pdf-font-stream PDF embedded font (sfnt) at offset 0x21887 11444 bytes
font_01_sfnt_off0002333c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x2333C 16792 bytes
font_02_sfnt_off00024b4e.bin
54277b1d76f4429fe64c40d8400cb87e222fa6a26058165eb2ee1863dfdba3ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x24B4E 16812 bytes