Malicious PDF — malware analysis report

Static analysis result for SHA-256 baa0680785ec91ca…

MALICIOUS

PDF

72.9 KB Created: 2021-02-28 14:18:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c85728e8dd7bfe6e1eb42eebee5d6d8 SHA-1: 2bfba0c4c3ec4ecf0f3963c2078168a1f58df3bf SHA-256: baa0680785ec91ca688e1a9e729d5653626dbe5c2bc6bee3bf714e203bc798aa
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit user interaction for malicious purposes, likely through a social engineering lure related to job compensation.

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://crophysi.ru/123?utm_term=how+much+do+planet+fitness+managers+make
    • https://bukivobiwizu.weebly.com/uploads/1/3/4/0/134097020/xamudu_ruwit_sukonelajokemi_sumivatuzajag.pdf
    • https://cdn.sqhk.co/safajoju/byhdjBG/basketball_legends_unblocked_games_66_77_99.pdf
    • http://sozaxesugoj.mywebcommunity.org/saraswati_puja_mantra_in_bengali_script.pdf
    • https://cdn-cms.f-static.net/uploads/4411701/normal_602fb0d22fb9a.pdf
    • https://jowisatog.weebly.com/uploads/1/3/4/4/134403507/pixid.pdf
    • http://forpost-electrica.ru/balance_general_comparativo_en_forma_de_reportelqhrx.pdf
    • https://rajizoru.weebly.com/uploads/1/3/1/8/131856770/672ecc.pdf
    • http://playmarket-online.com/33700965285omxm0.pdf
    • https://cdn.sqhk.co/zijigemeworu/cMghHVF/top_up_diamond_free_fire_garena_shell.pdf
    • http://meetdouche.xyz/pirezewasitol6wnt.pdf
    • http://tibagisuminove.sportsontheweb.net/39750914222.pdf
    • http://towufato.mywebcommunity.org/vigonagawipes.pdf
    • https://dotejapu.weebly.com/uploads/1/3/4/0/134042906/307481e7.pdf
    • http://naturebiolog.space/which_types_of_page_breaks_cant_be_deleteda0n2g.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vubelifijam.atwebpages.com/57792484166.pdf
    • https://s3.amazonaws.com/towakog/vusipofaxufovezi.pdf
    • https://s3.amazonaws.com/tapexiw/jivenimopetawas.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_off0000dfbd.bin
686f8f5b3a99b861d79114cf774fc24f9b63281f1e1044061f8e87c80d8318f6
pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBD 5684 bytes
font_01_sfnt_off0000f2fb.bin
be9ba193a0630d716a3b0d0fbf4756fdcaae2b3a069c8d3e3cb2f7fc93fad53d
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FB 10436 bytes