Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5707d91c1bd56ce…

MALICIOUS

PDF

77.8 KB Created: 2021-03-22 13:03:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 435b0c04ee298aa2fc038def2da58f9c SHA-1: 2fd397455f34eccd09ebc8743d0c395c7c81dc8a SHA-256: b5707d91c1bd56ce6570d400027b4685a06387fdbc285ce52e9610ef6826bd61
96 Risk Score

Malware Insights

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

The PDF file contains obfuscated text that appears to be a lure for a WWE 2K15 mobile APK. It also contains an external URI pointing to a suspicious domain, which is likely part of the phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=wwe+2k15+mobile+apk
    • https://cdn.sqhk.co/tizuvuwo/9hfDaja/dinghy_for_sale_michigan.pdf
    • http://bewudewumit.sportsontheweb.net/83008350143.pdf
    • http://fegivate.medianewsonline.com/brche_addieren_bungen.pdf
    • https://cdn.sqhk.co/wazilisiko/ogfmzzS/stickman_war_hacked_2.pdf
    • https://cdn.sqhk.co/zoluxoni/Miiihic/zudeluko.pdf
    • http://fubewakixodi.22web.org/komomosigu.pdf
    • https://cdn.sqhk.co/lejesapazud/WhjOiVM/98027480181.pdf
    • http://wopivobozas.66ghz.com/81206594590.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/302ddfa7-c61f-426f-8a5c-d72caf71b3b9/32753508275.pdf
    • https://s3.amazonaws.com/lizuseguwix/national_insurance_company_burglary_claim_form.pdf
    • https://uploads.strikinglycdn.com/files/daad4680-6185-44d7-96ec-852c3aca73a8/bodyweight_workout_at_home_apk.pdf
    • http://widunetodajak.rf.gd/articulaciones_de_la_mano_y_mueca.pdf
    • https://s3.amazonaws.com/sulasatevirexo/what_is_the_best_gas_golf_cart_to_buy.pdf
    • https://uploads.strikinglycdn.com/files/c9989a68-7fab-4c92-bf20-8782afe3fd2a/99479456285.pdf
    • https://uploads.strikinglycdn.com/files/26a8a1ee-e475-4de6-a303-931414b9ef4d/c2h4__agno3_nh3_d.pdf
    • https://uploads.strikinglycdn.com/files/e02c516c-2ee2-4e08-a210-1e5f19d14a94/how_to_clean_furnace_secondary_heat_exchanger.pdf
    • http://pusevim.epizy.com/sennheiser_ew300_g3_vs_g4.pdf
    • http://fukijudetoj.epizy.com/chrono_trigger_frog_theme_piano_sheet_music.pdf
    • http://tebuwawezizafes.onlinewebshop.net/stihl_blower_vacuum_bag.pdf
    • https://uploads.strikinglycdn.com/files/a8ffb4fb-2415-4407-8c7c-163815607076/lirezepexonade.pdf
    • https://s3.amazonaws.com/pazerogasarinu/vezalanem.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_off0000efcf.bin
ec90ef649e07a19d9a07c0e55fdb0d051781f479660f6f462c37b5d0616b5d23
pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCF 5308 bytes
font_01_sfnt_off000101f4.bin
2bdf11aedfab0c7c821e40fe7b6e5346777d85fdcd5e44ffbff7dc627790d574
pdf-font-stream PDF embedded font (sfnt) at offset 0x101F4 12216 bytes