Malicious PDF — malware analysis report

Static analysis result for SHA-256 f97aa4fed1f6351b…

MALICIOUS

PDF

80.1 KB Created: 2021-02-26 01:38:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 488daa0983daf60e246dfbce0d7d9436 SHA-1: b32bc05c1ab2101e3f97b9efad5cbccb82146de5 SHA-256: f97aa4fed1f6351bcad94e8dfe301f3b42432ea36b04f0ffc42aa7b093c86a3f
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that directs to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The embedded URL, 'https://maypoin.ru/wix?keyword=4th+and+goal+unblocked+66+at+school', suggests a lure related to online games to entice users to click.

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=4th+and+goal+unblocked+66+at+school PDF link annotation
    • http://gapagal.mywebcommunity.org/12065009793.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366625/normal_6036fbfded2e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479439/normal_60370e8a68260.pdfIn PDF document text
    • http://losqutoq.online/41639943785pc1j9.pdfIn PDF document text
    • http://bupetud.xyz/numark_ttusb_turntable_dust_cover5kbor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456389/normal_5fcc23fc3889a.pdfIn PDF document text
    • http://fb-pageunderreview.com/23698952739s8zz3.pdfIn PDF document text
    • http://bluetea.space/astrology_predictions_by_date_of_birth_tamilrphml.pdfIn PDF document text
    • http://bbflowers.net/how_to_become_cisco_certified0wkza.pdfIn PDF document text
    • http://bestrongbyg.com/flipping_houses_for_dummies_ukh9x00.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428342/normal_5fd039cb0e6ba.pdfIn PDF document text
    • http://tuvugisuxizew.iblogger.org/vitozunuxa.pdfIn PDF document text
    • http://skidki-day.store/cool_mi_launcher_prime_mod_apk5peek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/teacher_assistant_cover_letter.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/mimefo.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/96069307824.pdfIn PDF document text
    • http://buxuzob.epizy.com/afar_magazine_writers_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/free_fire_pc_online.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/gta_cheats_san_andreas_android_apk.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8A 5456 bytes
SHA-256: bd07df9c2b311d492a8e2c803cab968591564786d6fe463cf054ea69216fd241
font_01_sfnt_off0001101a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1101A 10276 bytes
SHA-256: 91609b8ff75f05b2fc7e615d5b5a49efe78807ea22a178332e8b3ea252bced6d

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