Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e0667bb83496673…

MALICIOUS

PDF

88.9 KB Created: 2021-03-26 11:38:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c06bf18ace1e4c0ba3428e477e9fbba4 SHA-1: 9b8f87d6185a00ba447261606eff11ab7a230858 SHA-256: 0e0667bb83496673437e373357fb24106e980221fbf40f8c03df258841fc87dc
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'botokaw.ru', which is likely used to host a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to 'Fight club characters analysis'.

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://botokaw.ru/wix?keyword=fight+club+characters+analysis
    • https://cdn-cms.f-static.net/uploads/4463279/normal_604fe2907a278.pdf
    • https://cdn-cms.f-static.net/uploads/4474191/normal_604d13627f447.pdf
    • https://static.s123-cdn-static.com/uploads/4381532/normal_5ff231fabfea4.pdf
    • http://smilex.club/singular_and_plural_nouns_worksheet_doci0x80.pdf
    • http://pearhaidhr.fun/70659869069zi2e8.pdf
    • https://cdn.sqhk.co/turomixo/jjiii9b/46067455384.pdf
    • http://petrol-v-pol-price.site/weathering_and_erosion_video_worksheet6ntca.pdf
    • https://cdn.sqhk.co/jagojixego/TqjhJif/nfl_fantasy_football_rankings_2020_by_position.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rimejiguvif/37148538589.pdf
    • https://uploads.strikinglycdn.com/files/060e459b-faca-4ba4-8885-305e88e2588f/ego_ideal_examples.pdf
    • https://s3.amazonaws.com/wizitifowubux/19276214523.pdf
    • https://s3.amazonaws.com/muvemasoxaji/desixanikuda.pdf
    • https://uploads.strikinglycdn.com/files/cd00de4e-3521-470e-95b2-c87b89e96d8a/how_to_open_kenmore_elite_washer_door.pdf
    • https://uploads.strikinglycdn.com/files/a529f997-d396-40e5-b8ca-2e834fb501ec/wheel_horse_parts_on_ebay.pdf
    • https://s3.amazonaws.com/widuxade/adverbs_of_frequency_in_negative_sentences.pdf
    • https://uploads.strikinglycdn.com/files/532801ec-588a-4aba-865c-23e0b07e5a7d/crosley_record_player_power_cord.pdf
    • https://s3.amazonaws.com/neporezofov/autocad_file_format_converter.pdf
    • https://uploads.strikinglycdn.com/files/06d6eca4-62c4-46ac-889f-7532e8bfeea4/88319136585.pdf
    • https://uploads.strikinglycdn.com/files/d925f556-c8f1-4c86-9823-2e2492ee03d1/38241676701.pdf
    • https://uploads.strikinglycdn.com/files/ab0eab62-eaf8-4c9c-ba34-c8e7ea762fc9/80770370965.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_off000120af.bin
51680eb2fc17d35220566d42bd29314bb2c7a6514b456d982801a2b8019720c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x120AF 5256 bytes
font_01_sfnt_off0001329c.bin
238ae6bec08574b63c4f8dcbde44089c9a9b90e0564857bafb8ddc6acac7e80e
pdf-font-stream PDF embedded font (sfnt) at offset 0x1329C 10408 bytes