Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdd20beca531defa…

MALICIOUS

PDF

77.5 KB Created: 2021-02-22 16:43:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab9fa84c40728a4670167dff77115eb1 SHA-1: 7a9ea19fbdb188934582540c3b03c429b5c7f783 SHA-256: cdd20beca531defacb3aaa6a5619302b6111bd1b6339622243305b4893c7e541
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a potentially malicious website disguised as a 'Weight watchers complete food companion 2020'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of an external URI is a primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=weight+watchers+complete+food+companion+2020
    • https://cdn.sqhk.co/wuvupalib/jicodjb/48106430769.pdf
    • https://cdn.sqhk.co/zejegure/gcbPt6A/mountain_bike_tires_26_x_2._35.pdf
    • https://static.s123-cdn-static.com/uploads/4444386/normal_5ff7a54fe2d99.pdf
    • https://cdn.sqhk.co/potiribuwuf/jirgAJE/vuxosezisuseteji.pdf
    • https://cdn.sqhk.co/jodariwem/hgghhdL/thrifty_car_rental_promo_code.pdf
    • https://cdn.sqhk.co/migukosodaza/zibijBE/36758913686.pdf
    • https://cdn.sqhk.co/jigidokasaga/ji7jjhf/td_bank_transfer_money_from_us_to_canada.pdf
    • https://cdn.sqhk.co/rifojimuna/agigfgh/royale_for_dance_themes_wallpapers.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mepudizik.rf.gd/380439276.pdf
    • https://s3.amazonaws.com/jumedemimo/lupevukupatupa.pdf
    • https://s3.amazonaws.com/wezukep/vunibukugevi.pdf
    • https://s3.amazonaws.com/zoxewudunigus/bukajidizoximevigaj.pdf
    • https://s3.amazonaws.com/sefabe/conference_event_program_template.pdf
    • https://s3.amazonaws.com/gopifu/27323413203.pdf
    • https://s3.amazonaws.com/divexikav/97845443844.pdf
    • http://kajomeki.epizy.com/chrome_installer_for_another_computer.pdf
    • https://s3.amazonaws.com/xupizewuxere/rulovutebuz.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_off0000f072.bin
5ca19c6341e6848fb1a8c45f7633040c73512009c51b7b1ca1f4df41e71436c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF072 5948 bytes
font_01_sfnt_off000104a9.bin
efb50c24334132e85d2319348281cbc84076d1fdfaa05cfc5e102f3022164c73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104A9 10672 bytes

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