Malicious PDF — malware analysis report

Static analysis result for SHA-256 e740acd389ebe2fc…

MALICIOUS

PDF

78.0 KB Created: 2021-02-26 16:26:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 6494c2dad2415cca6a0f3a847377ab1f SHA-1: 767783abcee0617694f3655e0734a1f714ee3dc7 SHA-256: e740acd389ebe2fc9290ca8186fc9bbd64cf40607ad6392b19eb3dae412f0098
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely to host further malicious content or phishing pages. The document body, though heavily obfuscated, suggests a lure related to 'English conversation topics'. No scripts were extracted, but the presence of external URIs and the overall detection profile indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jacksth.ru/123?utm_term=english+conversation+topics PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4387825/normal_5fdd1debdcd94.pdfIn PDF document text
    • https://cdn.sqhk.co/nevupediwix/hFgdkhc/57353730844.pdfIn PDF document text
    • https://cdn.sqhk.co/nezazexador/aIgfPWl/game_screen_recorder_mac_os.pdfIn PDF document text
    • https://cdn.sqhk.co/zirigajer/mVBhg7d/fifa_world_cup_2014_game_ps4.pdfIn PDF document text
    • https://cdn.sqhk.co/tofatuxurejo/hWozjjg/nemof.pdfIn PDF document text
    • https://cdn.sqhk.co/lilapanorup/kdgjhcL/sound_effects_library_subscription.pdfIn PDF document text
    • https://cdn.sqhk.co/botonerepap/igWi2gg/19509059338.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvonusebex/dXgd4gg/boyfriend_plus_andy.pdfIn PDF document text
    • https://cdn.sqhk.co/wodelaganav/bjgnafs/64249612358.pdfIn PDF document text
    • https://cdn.sqhk.co/jisanipu/ReicwlN/8-_bit_music_maker_scratch.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448332/normal_602ee8da238f0.pdfIn PDF document text
    • https://cdn.sqhk.co/sorubajuzoxe/ekghH87/nawafubeju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470688/normal_6023d2721a822.pdfIn PDF document text
    • https://cdn.sqhk.co/bozomixega/TRigiij/tomb_raider_film_streaming_italiano.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gijomifede.rf.gd/misosaxexevesediraj.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_off0000f531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF531 5212 bytes
SHA-256: 6c75646a0dd990034b3c14dabd4a64a5eb448cc982bb0a4cdb688f575404ac31
font_01_sfnt_off000106f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F8 10628 bytes
SHA-256: eda1a6c46736501d3a654d6aee468aafcb06d01ccb22eb7bdf278a8e67b3ddbc