Malicious PDF — malware analysis report

Static analysis result for SHA-256 b174785f7ba68672…

MALICIOUS

PDF

84.5 KB Created: 2021-03-23 04:37:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 0c844fc4375d466af752a4c75e661beb SHA-1: 2d7834f7010da478437dd0d6c8a5690ca7fd0a1d SHA-256: b174785f7ba68672ec399e27dd98fae5e9f8e1e2307ab649de2ae80f321c6959
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL pointing to a site offering a 'bike race mod apk', suggesting a lure to download a fake application. While no scripts were directly extracted, the presence of an external URI and the nature of the detection indicate a phishing attempt.

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://vilenefex.ru/wix?keyword=bike+race+mod+apk+all+bikes PDF link annotation
    • https://cdn.sqhk.co/xanodujijefu/ggzifjj/machine_gun_simulator.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368978/normal_60474d8c4d821.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476281/normal_5fd3b109cb31e.pdfIn PDF document text
    • https://cdn.sqhk.co/gotakavapu/q1jccQU/ates_ve_su_1_2_kisilik_oyun_skor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374954/normal_603027b2d23e4.pdfIn PDF document text
    • http://beremoter.online/amoxicilina_250mg_ml_bula7cs9y.pdfIn PDF document text
    • http://oblakova.ru/xebepiwosej57wmi.pdfIn PDF document text
    • http://reduslim-italy.site/5633400292l4djk.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/hagijbd/76112730357.pdfIn PDF document text
    • http://itdiscounts.pro/volar_sobre_el_pantano_descargar_libro_completoxsidi.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/lixasifasi/sakulinudinaluteki.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/basketball_manager_games_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/80762062535.pdfIn PDF document text
    • http://xamuboba.epizy.com/40076545388.pdfIn PDF document text
    • http://zigimavabixexib.epizy.com/bushcraft_gear_list.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/ketepe.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/email_writing_samples_formal.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/macario_movie_questions_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/wow_enhancement_shaman_pvp_guide.pdfIn PDF document text
    • http://dolevegun.epizy.com/crown_him_with_many_crowns_chris_tomlin_lyrics_and_chords.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_off00010d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D6F 5472 bytes
SHA-256: 95f0f2f441fb2501219263f21480ea6321c4635912286e3259af70d3c1893386
font_01_sfnt_off00011feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FEB 10896 bytes
SHA-256: 29fddf2ae3f5e21c20546645e140485920840d051d30073de66b08fea831756e

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