Malicious PDF — malware analysis report

Static analysis result for SHA-256 12424d4993d65cb8…

MALICIOUS

PDF

71.5 KB Created: 2021-03-07 07:41:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 57843200800b165e2a1e95b172cb17b9 SHA-1: a66ed25914e90d29c8aae2ee7d63fbd55162cb02 SHA-256: 12424d4993d65cb880893a4f5ff21fb41f20c39fa87adcb049565b343c912a43
126 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and is flagged by multiple heuristics, including a machine learning classifier and ClamAV, as malicious and likely phishing-related. The document body, though heavily obfuscated, suggests a lure related to the 'Consulado general de el salvador en chicago'. The presence of numerous external URIs indicates an attempt to redirect the user to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wix?keyword=consulado+general+de+el+salvador+en+chicago PDF link annotation
    • https://cdn.sqhk.co/movozuba/gJtVdgc/fimezekaboretiduvadafutuf.pdfIn PDF document text
    • https://cdn.sqhk.co/zepipawetopi/gjjigdp/gotip.pdfIn PDF document text
    • https://cdn.sqhk.co/mogezunir/gjiXHif/inclusive_environment_rics.pdfIn PDF document text
    • https://cdn.sqhk.co/nepajenine/Kjfgia8/gakabasetulir.pdfIn PDF document text
    • http://vavesojijakoju.iblogger.org/12588941094.pdfIn PDF document text
    • http://welifenepural.iblogger.org/husqvarna_jade_sewing_machine_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/wetotuluxe/XbhjjMV/commander_battle_hack_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gezixerigalejeb.rf.gd/22817230557.pdfIn PDF document text
    • http://xojozefobulujox.epizy.com/88298755101.pdfIn PDF document text
    • http://xutojolalu.epizy.com/report_cong_maternit_si_accouchement_prmatur.pdfIn PDF document text
    • http://sixijoras.epizy.com/4480185642.pdfIn PDF document text
    • http://dadizapapegase.rf.gd/87987457692.pdfIn PDF document text
    • http://wodedane.rf.gd/36397911415.pdfIn PDF document text
    • http://xujezajonibibop.epizy.com/povojipebageminovopibi.pdfIn PDF document text
    • http://damoserik.epizy.com/43140384030.pdfIn PDF document text
    • http://zopefunexot.epizy.com/sp_hybridization.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD202 5168 bytes
SHA-256: 2c5ace3323984581b67f718ddbfa79158fdb551a69058566a7a36263b8ef3e75
font_01_sfnt_off0000e392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE392 14764 bytes
SHA-256: aa131010a42bdf5bc8f9ae1db3563e944be99de5c0e8a1c680cc3f2a8a7f615d

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