Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdd67b4db111f1bb…

MALICIOUS

PDF

65.5 KB Created: 2021-02-13 06:56:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: fee9f38cf494437cf85cb7521cb60400 SHA-1: 6ace2b554e156796103f52a82457e43ec74cc84e SHA-256: fdd67b4db111f1bb0fd18fbe5724ff9b08dbe788e6207e2d50c66fedefb273fe
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that points to a suspicious domain, identified by heuristics as an external URI and flagged by a machine learning classifier and ClamAV as malicious. The document body, though heavily obfuscated, appears to be a lure related to a product listing, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the presence of a malicious URL strongly indicates an intent to redirect the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/123?utm_term=whalen+xavier+3-in-1+tv+stand+for+tvs+up+to+70 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370270/normal_5fdc3368d5d68.pdfIn PDF document text
    • http://sebaxupakokak.22web.org/zisalirivagigebunasodigaw.pdfIn PDF document text
    • https://cdn.sqhk.co/jojewezalika/gjZGFje/54621777806.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454046/normal_60039791a536c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427282/normal_5fec0637ba97c.pdfIn PDF document text
    • https://cdn.sqhk.co/dojidavos/cLDIlhd/25632032350.pdfIn PDF document text
    • https://cdn.sqhk.co/vimewiki/jgYUKhL/coach_mobile_homes_for_sale_in_florida.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426955/normal_5fec3059005cb.pdfIn PDF document text
    • https://cdn.sqhk.co/bupewazadufa/iMgihe0/happiness_synonyms_in_telugu.pdfIn PDF document text
    • http://welojesuvarari.iblogger.org/mumetezodivuwi.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/6jdWheA/crime_city_police_driver_unlimited_money.pdfIn PDF document text
    • https://cdn.sqhk.co/bomagomax/gcjcFhe/34516398409.pdfIn PDF document text
    • https://cdn.sqhk.co/lobaluxomo/gdDgigg/light_purple_room_decor.pdfIn PDF document text
    • https://cdn.sqhk.co/tusadopovet/UOGGIhi/village_farm_game_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/mesodimeduje/jeieajp/flow_free_warps_sampler_level_106.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wikatamuk.rf.gd/antimicrobial_activity.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/caldera_junkers_manual_de_instrucciones.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_off0000c21e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC21E 5740 bytes
SHA-256: 9522ee58b42f5c95304519ec0a9c065db95d34344916ce2fdba13c262e0e184b
font_01_sfnt_off0000d5cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5CB 10260 bytes
SHA-256: 4d12f3c37e913f8af808d355d6d340cd2d8e824fa5a2e973a4ec8fca7116e132

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