Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ce4496aa09fe6a…

MALICIOUS

PDF

76.7 KB Created: 2021-03-30 18:19:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f21b3696c455a00bd1ddea4242d19a31 SHA-1: 75bd5327be90151344e04ab72e3e5855e2759da3 SHA-256: 75ce4496aa09fe6a7ac7b6d7d05538d7b469048bcce19b115ce1e4cfa17c2cb6
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'ponafet.ru', which is likely used to deliver a malicious payload or conduct phishing. The document body, though heavily obfuscated, contains keywords related to search queries, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/award?keyword=rise+of+nationalism+in+europe+class+10+book+pdf
    • https://cdn.sqhk.co/kunimanujage/iZggojh/can_i_use_move_to_ios_after_setup.pdf
    • https://sokirokesavosa.weebly.com/uploads/1/3/4/9/134901907/1955668.pdf
    • https://cdn.sqhk.co/padezeda/ebyndFi/xogunobo.pdf
    • https://sukurexu.weebly.com/uploads/1/3/0/9/130969838/ff6fba1b85.pdf
    • https://cdn-cms.f-static.net/uploads/4417429/normal_5fd80b9ddd2da.pdf
    • http://liniwugo.iblogger.org/ego-t_vape_pen_for_sale_near_me.pdf
    • https://fulesinarube.weebly.com/uploads/1/3/4/7/134729099/e019cc76a.pdf
    • https://cdn-cms.f-static.net/uploads/4422148/normal_6033863f57e8b.pdf
    • https://migawonakizize.weebly.com/uploads/1/3/1/6/131637147/vivejudesino_jogukubodotej_zoderitifa.pdf
    • https://cdn-cms.f-static.net/uploads/4410694/normal_601a7224a48f3.pdf
    • https://cdn-cms.f-static.net/uploads/4489428/normal_603840d2cd000.pdf
    • https://cdn.sqhk.co/sejejajoxej/ibOSSig/19949587183.pdf
    • https://cdn.sqhk.co/jejefudebuxi/nWzjgtc/simpsons_monkey_knife_fight_meme_generator.pdf
    • http://wuziwajevif.iblogger.org/gowonoruwis.pdf
    • https://cdn.sqhk.co/vagizabibo/gie8khj/85049879924.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pusori/chennai_express_movie_mkv_480p.pdf
    • https://s3.amazonaws.com/luropiw/48100893904.pdf
    • http://laxisix.epizy.com/how_do_i_know_when_my_jawbone_is_charged.pdf
    • https://s3.amazonaws.com/xisefowu/how_to_change_your_mind_michael_pollan_read_online.pdf
    • https://167c8e7b-8160-49a2-a88e-f26749d647c8.filesusr.com/ugd/1ad47d_baa4ccfad5e741b9b36f7ee2ca59621c.pdf?index=true
    • http://tujanum.rf.gd/anthropology_study_material.pdf
    • https://50aad03f-9d2a-47e6-be13-abd12f321b17.filesusr.com/ugd/3fd638_b58f04934be04c3da10f94748f6c02b9.pdf?index=true
    • https://2559d30b-64cd-4b4d-aaad-e76a675dde99.filesusr.com/ugd/f5a024_e0a881e6e9ce4bb988e3a818d6dcda47.pdf?index=true
    • 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_off0000edd9.bin
410cd15ae232e85a61adc2bb4d48efcaa29ff626e045987e121b7443c25f68f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD9 5704 bytes
font_01_sfnt_off00010129.bin
d570591a2045aaa0fb8a359251852936fc05a53a1019816e853bd9bbaf663176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10129 10536 bytes

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