Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a908792c168b7dc…

MALICIOUS

PDF

75.1 KB Created: 2021-03-15 11:37:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5df3ef0a9856736123517ca6ae9f035 SHA-1: 79ced501ca879bf03834555821788e7236f97b70 SHA-256: 3a908792c168b7dcb7c3ed13538872858359f46f47bc8a439e8dfe0c7b79f2cd
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://jumiwimov.ru/wix?keyword=star+citizen+lorville', which is likely part of a phishing or credential harvesting scheme. The document body, though partially corrupted, suggests a lure related to 'Star Citizen Lorville'.

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://jumiwimov.ru/wix?keyword=star+citizen+lorville
    • http://rijoginijamibeg.mypressonline.com/waxenugupek.pdf
    • http://rajukilodagoje.mygamesonline.org/49017419583.pdf
    • http://zelumefepa.sportsontheweb.net/shark_lift_away_pro_steam_pocket_mop_reviews.pdf
    • http://rolapisi.scienceontheweb.net/23250604172.pdf
    • https://cdn.sqhk.co/bukevexej/75HBhe7/need_for_speed_underground_rivals_car_list.pdf
    • https://cdn.sqhk.co/gawagunikuw/p2Xhd53/27384786414.pdf
    • http://vanesifonemume.22web.org/97822952928.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://rewifavad.epizy.com/woputusado.pdf
    • https://uploads.strikinglycdn.com/files/b1f72a6a-a217-41e6-b405-03bbb157d956/7488721239.pdf
    • https://uploads.strikinglycdn.com/files/7c5af479-2a60-4da3-a04e-1134dfbc8dbc/bosikoxafunaxurawizatig.pdf
    • http://teropisarazo.myartsonline.com/amsco_apush_2020_answer_key.pdf
    • https://s3.amazonaws.com/dazemi/ultrasound_guided_needle_biopsy_liver.pdf
    • https://uploads.strikinglycdn.com/files/82751b57-5401-4fd4-9860-c315a5f0753d/how_to_calculate_total_interest_payment_on_a_loan.pdf
    • https://s3.amazonaws.com/sepovutapakogaf/73869104822.pdf
    • https://s3.amazonaws.com/devuxuzejozam/taurus_pt111_millennium_pro_laser_sight.pdf
    • https://s3.amazonaws.com/jujadodedaruxix/bhojpuri_song_dj_remix_2019_video.pdf
    • https://uploads.strikinglycdn.com/files/c90e1f79-cf6d-4bda-875c-d0420a62a118/how_to_multiply_30.pdf
    • https://s3.amazonaws.com/zifozujiwi/vuluzabi.pdf
    • https://uploads.strikinglycdn.com/files/f0c81607-dbc1-4586-8da0-f3da842213de/how_to_calculate_volts_in_a_parallel_circuit.pdf
    • http://pisexudovekozus.rf.gd/neteller_app_android.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_off0000e9e9.bin
c8878b7e8a0a038bfe5526ab9371853c007456153626accfbb6622d71c9daeda
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E9 4828 bytes
font_01_sfnt_off0000fa6e.bin
503f47eb82f35242f71e70e302ccf457ac1507641e63109db7bd512b4a408aaa
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA6E 10896 bytes