Malicious PDF — malware analysis report

Static analysis result for SHA-256 948fa85b0a782682…

MALICIOUS

PDF

83.2 KB Created: 2021-03-04 04:45:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d7ca1b624871f5fff9a14f2878aa82f SHA-1: e7e62a86370d74f60c6c3c73acbdad76c5639fa5 SHA-256: 948fa85b0a78268276121fa5f8783065584401d26c398fed103ae8214c7f05c3
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an external URI pointing to a suspicious domain, which is a common tactic for phishing lures. Although no scripts were explicitly extracted, the PDF structure and the presence of external URLs suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

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://golowaki.ru/123?utm_term=factors+influencing+consumer+perceptions+of+brand+trust+online
    • http://sakulog.sportsontheweb.net/how_to_install_a_clothes_dryer_outlet.pdf
    • http://sqrab.top/30627795489006db.pdf
    • http://serururepus.scienceontheweb.net/nuxuzizid.pdf
    • http://vbnmcxz.xyz/my_passport_ultra_driver_error1fpmz.pdf
    • http://istlan.fun/why_is_my_iphone_not_connecting_to_syncing_emails4at4y.pdf
    • http://vuvulusigi.scienceontheweb.net/ragekirer.pdf
    • http://tokexal.medianewsonline.com/passport_9500ix_manual.pdf
    • https://rifodajawu.weebly.com/uploads/1/3/0/7/130739776/kemekodisedena.pdf
    • http://vaxuzorokolate.iblogger.org/aai_milan_ki_raat_full_movie.pdf
    • https://xiriwedonup.weebly.com/uploads/1/3/4/2/134265341/1852018.pdf
    • http://xejepurefe.scienceontheweb.net/34592185096.pdf
    • http://uber-global.com/mohabbat_barsa_dena_tu_mp3_song_free_download19wbg.pdf
    • http://nigodofifulo.scienceontheweb.net/journey_to_the_west_full_movie_in_hindi_dubbed_download_720p.pdf
    • https://jawuvufos.weebly.com/uploads/1/3/4/8/134856807/e13e8c3f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://fazafowunop.epizy.com/18357264379.pdf
    • http://bowegasobufur.myartsonline.com/dakufuxabuzuwozufofugof.pdf
    • http://datasagedabisu.epizy.com/c_a_g_report_2017.pdf
    • http://jokubamobivavum.onlinewebshop.net/samsung_hw_e450_soundbar_review.pdf
    • http://bixitodofotav.epizy.com/18251100686.pdf
    • http://mijovutotukedes.onlinewebshop.net/6024559449.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7bc.bin
4462ed52e49de78e9ff588b22067926e3b955d5ce38cca07122082db579ca51b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BC 5452 bytes
font_01_sfnt_off00010a1f.bin
1e62aa0542e6180a739688e789e7db08655dbf3982fb35f254fa74467f699f5b
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A1F 11264 bytes
font_02_sfnt_off0001306d.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x1306D 4324 bytes