Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f2e4c9a60b67658…

MALICIOUS

PDF

88.7 KB Created: 2021-03-03 20:44:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: ed187e1fef615d976fd0805f37e72612 SHA-1: 493111a61d23bfd47dda552f9de4cc6d279b40b5 SHA-256: 2f2e4c9a60b6765828d37b386a0c8f9ce2a8e385db02517e3f55812a9d0fe346
126 Risk Score

Malware Insights

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

This PDF document is classified as malicious by ML and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with the primary one being `https://jottigo.ru/strik?utm_term=johnson%2527s+reconstruction+plan+summary`, likely intended to redirect the user to a malicious site. The document's structure and content suggest it's part of a phishing campaign, potentially using a lure related to a "reconstruction plan summary".

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://jottigo.ru/strik?utm_term=johnson%2527s+reconstruction+plan+summary PDF link annotation
    • https://dewajijivixire.weebly.com/uploads/1/3/4/6/134638152/mebutopu.pdfIn PDF document text
    • https://fejaxipanegis.weebly.com/uploads/1/3/2/7/132712099/c8f12.pdfIn PDF document text
    • https://nakofasojerurog.weebly.com/uploads/1/3/4/5/134592478/fezokem.pdfIn PDF document text
    • http://getveran.site/kitchenaid_food_processor_dicing_kit_instructionspxgo5.pdfIn PDF document text
    • https://pubogovivewata.weebly.com/uploads/1/3/2/3/132302724/kipubozotusuwubusudu.pdfIn PDF document text
    • http://trokot-shopnew.online/77909032644rrlph.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/povuviveruvota.pdfIn PDF document text
    • http://tokexal.medianewsonline.com/rangers_apprentice_movie_cast_auditions.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nukilaba.myartsonline.com/mirilujipijod.pdfIn PDF document text
    • http://sivikonalijuto.myartsonline.com/what_best_characterizes_greek_religious_beliefs.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/knee_osteoarthritis_treatment_guidelines.pdfIn PDF document text
    • http://romamosok.rf.gd/c_forward_declaration_template_function.pdfIn PDF document text
    • http://jatoxat.atwebpages.com/how_to_reset_code_on_bunker_hill_safe.pdfIn PDF document text
    • http://vumamuv.myartsonline.com/kemper_profiler_bass_review.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/67078462376.pdfIn PDF document text
    • http://zodexuwuvunuxo.epizy.com/96327528719.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_off0001211e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1211E 5300 bytes
SHA-256: ae4c4294ac11db3f8737d09e0f17927c7b8e4ab60d7c23ae14d256158b7ada58
font_01_sfnt_off00013306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13306 10060 bytes
SHA-256: 1cb00f5003ef122fa9462f0237627162de98edf960c645dde34700de75723ed9

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