Malicious PDF — malware analysis report

Static analysis result for SHA-256 d95b7f43c39e2656…

MALICIOUS

PDF

78.3 KB Created: 2021-04-18 14:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3af97b73f2110854c57914e331dca02c SHA-1: 2f7a7a70d59048d1316e92e3b922d15f091d89d7 SHA-256: d95b7f43c39e2656a3592685df3eb726b9f1b7abafaafe8be9cd500544defda9
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 URL that appears to be a lure related to car pricing. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site, likely for phishing or scam purposes.

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://kuzutuzo.ru/strik?utm_term=how+much+should+i+pay+for+a+2020+toyota+camry
    • https://cdn-cms.f-static.net/uploads/4465147/normal_6064ae3bc374e.pdf
    • https://cdn.sqhk.co/vunelebu/jdidEs7/fleetwood_mac_viral_video_original.pdf
    • http://kamijuzexujap.iblogger.org/addition_and_subtraction_worksheets_1st_grade.pdf
    • https://cdn-cms.f-static.net/uploads/4406516/normal_6037f90db6307.pdf
    • https://cdn-cms.f-static.net/uploads/4456378/normal_60315e8ea3f3c.pdf
    • https://cdn.sqhk.co/rizakumer/hiKohhb/jubumiteru.pdf
    • https://cdn.sqhk.co/fedovipawe/J78xjjn/hyper_scape_ps4_price.pdf
    • http://gudituxubimof.22web.org/i_am_the_purple_guy_lyrics_genius.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://gazezubutajon.rf.gd/sarcasm_and_irony_worksheets.pdf
    • http://bojibag.epizy.com/aditya_narayan_photo.pdf
    • http://vodifazi.epizy.com/fender_gb_hot_rod_deluxe_review.pdf
    • https://s3.amazonaws.com/seriposuj/chokher_bali_bangla.pdf
    • http://xagaketukije.rf.gd/dobamegevanuriwanew.pdf
    • https://s3.amazonaws.com/kuxegu/how_to_reset_password_on_verizon_jetpack.pdf
    • https://s3.amazonaws.com/sevoga/materiales_restauradores_en_odontopediatria.pdf
    • https://s3.amazonaws.com/pobixedele/rupamebozuwuganider.pdf
    • http://wijopimitiraze.epizy.com/how_to_start_a_career_in_gunsmithing.pdf
    • http://mujozigimak.rf.gd/python_tutorial_for_beginners_with_examples_in_hindi.pdf
    • https://s3.amazonaws.com/bamepofewalada/57156832059.pdf
    • http://kojomazudogog.epizy.com/truist_bank_address_for_wires.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_off0000e647.bin
cbe462359dac220929e973b8aca9e75229fad65d500a1d91973906ffc3eb46e5
pdf-font-stream PDF embedded font (sfnt) at offset 0xE647 5480 bytes
font_01_sfnt_off0000f8fb.bin
e437b35591a0648d1a5cb91ccc45df3599d23d6b42d5bae1a24f331c2dc6b913
pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FB 10644 bytes
font_02_sfnt_off00011d59.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x11D59 4324 bytes