Malicious PDF — malware analysis report

Static analysis result for SHA-256 26ce175326249b44…

MALICIOUS

PDF

79.4 KB Created: 2021-03-28 20:20:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: d4fd4434ef1e09c2431e377e42c8f892 SHA-1: 27b39bf0eaca441745021285e1cb23baeed22416 SHA-256: 26ce175326249b4410181b8aca869c9f2de7030fffc4a6c986236c7bcedd5a45
126 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to a watch manual.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xezojetit.ru/wix?keyword=manual+citizen+eco+drive+e650 PDF link annotation
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • http://itdiscount.info/92591492120n687o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427795/normal_5fde9e5685d9d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365576/normal_5fcd1dac73295.pdfIn PDF document text
    • http://casserlabs.xyz/plantronics_c053_user_guideobbbh.pdfIn PDF document text
    • http://metryck.info/wojivezowun4ej03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382976/normal_604351a7484fd.pdfIn PDF document text
    • http://stroymarketmetal.ru/how_much_are_pfaff_sewing_machineseo5zu.pdfIn PDF document text
    • http://openplafond.xyz/vapomadikegatil1hzb.pdfIn PDF document text
    • http://trokot-roznica.xyz/change_spring_framework_version_in_spring_boot_projecttwz67.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479462/normal_5fee042b91de8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423133/normal_600082574dd43.pdfIn PDF document text
    • http://natlegend.space/crm_icon_freevj9oq.pdfIn PDF document text
    • http://frut-tree.site/jijojobobuwesedezafzodc.pdfIn PDF document text
    • http://lnstagramlivesupportcenter.com/36381821985tmn7r.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/cystic_fibrosis_sweat_test_guidelines_uk.pdfIn PDF document text
    • https://a2876ee3-c470-454a-91e2-e108d831033a.filesusr.com/ugd/e8dba5_b9c1ac603fd34e358a31fdaea2a018f1.pdf?index=trueIn PDF document text
    • https://1fa67a36-2e8b-44cc-a955-751d80433762.filesusr.com/ugd/d85e51_72b5de5c176f401a981a7feb25b5f1ae.pdf?index=trueIn PDF document text
    • https://874c0fd6-92eb-497b-905f-dc7ca4d2e287.filesusr.com/ugd/5ca7d4_36745a8d9a314f6f9eb2058f803f3d7b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/wazigofomowokajezaref.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/swayamvaram_songs_320kbps.pdfIn PDF document text
    • https://4ef57e19-9a2e-4e6f-a444-f6b59f982a39.filesusr.com/ugd/4c1554_5cdaecdaf5084dbc8540ef02ea497bd9.pdf?index=trueIn PDF document text
    • https://7d6e376e-1ee3-4df5-88c1-8d1511d419f8.filesusr.com/ugd/7dd30d_a7d0057c94b243f0afbf88ca30f9951e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/swot_analysis_report_of_a_school.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_off0000f7fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FB 5292 bytes
SHA-256: 06e55681b58fdf94871ad92dc6dede61794876cf8c0c4d75e824e58fc77d3c74
font_01_sfnt_off00010a27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A27 10724 bytes
SHA-256: cf69507eef85025f235af4fdd6d882d8828229cb86e57b800afcfc165d71fca6