Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c7a20080fe7eed…

MALICIOUS

PDF

85.3 KB Created: 2021-03-05 20:50:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 6c31d8ad6f8506a1d1d80f7e256ffa1e SHA-1: 37156cad5b87c2ab570e72d856feeff7515eb512 SHA-256: f0c7a20080fe7eed4cda32935a6f925ffaa6c3bc697c853aea1c4c1d41cbe426
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, indicating a phishing or trojan payload. It contains an embedded URL that, when visited, likely leads to the execution of a malicious script or download of further malware. The document body, though heavily obfuscated, appears to be a lure related to a physics study guide.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wix?keyword=physics+chapter+14+study+guide+answers PDF link annotation
    • http://gadetebes.sportsontheweb.net/sopulewolexipigufo.pdfIn PDF document text
    • http://kejamezegujoz.iblogger.org/hey_hey_hey_song_katy_perry.pdfIn PDF document text
    • http://kosonetibekub.medianewsonline.com/webokipuwubaxekevimi.pdfIn PDF document text
    • http://zogagutezuwe.22web.org/modifojokerepogegupi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://donijexufenu.onlinewebshop.net/hp_probook_4530s_notebook_pc_energy_star_drivers.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/17317977358.pdfIn PDF document text
    • http://tosefiwaniw.rf.gd/can_you_put_a_tracfone_sim_card_in_another_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/caste_certificate_form_bengali.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/legit_bitcoin_mining_app_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2a1de59-f4e9-422b-a9f7-174317885fd0/75745073692.pdfIn PDF document text
    • http://kewivawegimomu.epizy.com/adelaide_oval_staff_uniform.pdfIn PDF document text
    • http://gojofim.epizy.com/gipugokapes.pdfIn PDF document text
    • http://zimeketoxera.epizy.com/resumen_los_5_lenguajes_del_amor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b920386d-1e15-482e-880a-35d1ab744a44/rock_and_roll_snowman_karaoke.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/vudaridufawadorawuzav.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/2848227159.pdfIn PDF document text
    • http://jiresigotapikeb.rf.gd/extent_report_example.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/barbie_girl_song_musicpleer.pdfIn PDF document text
    • http://boxemoje.epizy.com/3715158170.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/92128755554.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001030e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1030E 5412 bytes
SHA-256: 230a051b66b75c99946e398d3274d8bc117cbe99756b68f1ae6750771341ce38
font_01_sfnt_off00011582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11582 10652 bytes
SHA-256: 10e76335db812879d28ef86f173588355d595f8ac7ac97344c1ae1c230f470c0
font_02_sfnt_off000139b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139B9 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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