Malicious PDF — malware analysis report

Static analysis result for SHA-256 b46fefce6dec7fe2…

MALICIOUS

PDF

74.4 KB Created: 2021-03-03 21:39:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73cfb505cd4d82338862b12cae815382 SHA-1: 72e5f73bf054a711a2eedd07a4b73f488cef9276 SHA-256: b46fefce6dec7fe23764ee487698907c477c15bc6512ab98aa34fe7ef8d003c7
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that redirects to a malicious domain, disguised as a search result. ClamAV and ML classifiers have identified this file as malicious, specifically a phishing trojan. The presence of embedded URLs and the nature of the content strongly suggest a phishing attempt to redirect users to malicious sites.

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://xezojetit.ru/aws?utm_term=what+is+a+4+beat+note+called
    • http://remipav.22web.org/ariens_deluxe_24_engine_oil_capacity.pdf
    • https://cdn.sqhk.co/mekibekowufe/JijWjfI/pottery_barn_baby_gift_card_balance.pdf
    • https://cdn.sqhk.co/lepudijazur/jihjfjg/xotuvefupozulumit.pdf
    • https://cdn.sqhk.co/wizokawoxo/hdmhjge/juropiwiguwixagew.pdf
    • http://topemuliras.22web.org/89995613816.pdf
    • http://rorasilozaput.22web.org/android_9_xiaomi_devices.pdf
    • https://cdn.sqhk.co/davusegeb/iggggFg/zirelerixupugomesuka.pdf
    • https://cdn.sqhk.co/fivukidado/icyiihi/jezasolutikaxituz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dukerorute.epizy.com/muluximukoritewepa.pdf
    • https://s3.amazonaws.com/padadutiseni/transformation_matrix_cylindrical_to_cartesian.pdf
    • https://s3.amazonaws.com/jotizifime/zasusewelokobosedarim.pdf
    • http://juvojifexuf.epizy.com/to_prove_that_oxygen_is_produced_during_photosynthesis_by_hydrilla_funnel_experiment.pdf
    • http://padukejuredi.rf.gd/vutakinafitoriweripos.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_off0000e55d.bin
ec19c6025028752486bdb951e80e12ea292e4c11b7b71733fb444fe2780c694c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE55D 5172 bytes
font_01_sfnt_off0000f701.bin
46aa6fc66f7f6ea9f2bedf9fbc5ded82752cc13e87eaac72011bd6db68d27e2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF701 11040 bytes

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