Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b7a3cb35c303ac6…

MALICIOUS

PDF

82.1 KB Created: 2021-04-02 01:57:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc0c7c8431fa5984e85578b3ff9cb63e SHA-1: 157dc10ad4131cd49f902944ff39c58ba76db448 SHA-256: 9b7a3cb35c303ac6a09b824cea52d3226b54f62ad6053ad922e681c3aa7d4882
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to creating a boyfriend application on Google Docs, which is highly suspicious. It embeds a URL pointing to a malicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

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://pelibifir.ru/strik?utm_term=how+to+make+a+boyfriend+application+on+google+docs
    • http://hempmap.ru/ruwogeltz7qx.pdf
    • http://vowewudimo.mypressonline.com/history_of_computer_science_book.pdf
    • http://dobilarujokux.sportsontheweb.net/945801114.pdf
    • http://degimogug.mypressonline.com/betetoxiligowavu.pdf
    • http://mavito.online/835902746012pf3r.pdf
    • http://biniwitovo.mywebcommunity.org/kawukopakujepetexusadixin.pdf
    • http://zavodtriumf.com/goverijubiwivivojobizodggybi.pdf
    • http://usacreditscore.info/casual_leave_email_format7cvm0.pdf
    • http://monstergym.ru/8555239727726fda.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jufogitomob.onlinewebshop.net/bigger_leaner_stronger_workout_reddit.pdf
    • https://uploads.strikinglycdn.com/files/2706b44d-c0ce-4b4d-bedb-341db5cec6ca/how_much_does_a_bowflex_treadmill_cost.pdf
    • https://uploads.strikinglycdn.com/files/1492da2d-19e1-4db0-873e-9a918e30920b/59662627441.pdf
    • http://maxoretuvogimu.epizy.com/guitar_chord_bible_download.pdf
    • https://s3.amazonaws.com/tanikanaw/zedibowix.pdf
    • https://uploads.strikinglycdn.com/files/52aa20fc-7b3d-4d7e-bd98-9a53618cb0df/the_book_of_life_2014_dual_audio_hindi.pdf
    • https://s3.amazonaws.com/jezekemunidup/amma_songs_tamil_audio.pdf
    • http://lizelonuzabixek.epizy.com/disney_plus_not_working_on_samsung_smart_tv_may_2020.pdf
    • https://s3.amazonaws.com/jazofi/how_to_open_flash_player_on_chrome.pdf
    • https://uploads.strikinglycdn.com/files/946e24bc-71d0-4c2c-b44a-70528c433739/91701342416.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec67.bin
1f008dc3cee4a73419aa07f6f34383a4da8dfb73ad9edf4de21e51f64c8d4657
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC67 5836 bytes
font_01_sfnt_off00010045.bin
53e0f26410bdf06aa838e98a454d7e12f9bd721e0f89a5b143fbb01735f9da0b
pdf-font-stream PDF embedded font (sfnt) at offset 0x10045 10612 bytes
font_02_sfnt_off000124e1.bin
a4f616c8ed03231f927c8f6725ddfb6aed79ba1e9c0c9257d690ec40f184d4cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x124E1 16388 bytes