Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eadfeb395d83202…

MALICIOUS

PDF

98.7 KB Created: 2021-04-09 01:48:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 1803f3d98f4917d24b979c7e670f11e1 SHA-1: 7b50185ef9c57a4cb71eb0e8ad34a24ed9bbaced SHA-256: 9eadfeb395d83202ed369debf1fed447dba3b1bdb28292be8b907a6bc6c480b1
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains a large number of external links, suggesting it is part of a link farm or phishing campaign. The primary malicious URL identified is https://botokaw.ru/strik, which is likely used to deliver a secondary payload or redirect to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://botokaw.ru/strik?utm_term=evidence+that+demands+a+verdict+video+study PDF link annotation
    • http://rekijiwowak.scienceontheweb.net/61276133342.pdfIn PDF document text
    • http://noxavikadovul.mypressonline.com/acidic_radicals_and_basic_radicals.pdfIn PDF document text
    • http://rasudilikid.mywebcommunity.org/beauty_and_the_beast_vocal_sheet_music.pdfIn PDF document text
    • https://vomalokigalexa.weebly.com/uploads/1/3/4/3/134329787/35c3b905d550205.pdfIn PDF document text
    • https://turakenedonatup.weebly.com/uploads/1/3/4/6/134610331/wigukigolaf.pdfIn PDF document text
    • https://lofefogurabu.weebly.com/uploads/1/3/1/1/131164054/6620052f15.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://61df3396-90b5-4b69-a3ae-475c9da6ebc5.filesusr.com/ugd/516574_044455b539b545438e50a598da021d05.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/kinixokavuzuweziw.pdfIn PDF document text
    • https://72a23b54-95c1-47c0-80d6-f7b1310faeb8.filesusr.com/ugd/65b209_ab0e3faca9d448338a0879821f82f4c7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/dizumiwanogurofig.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/24755859926.pdfIn PDF document text
    • https://48cc712b-de5e-493e-a198-f8962849e22b.filesusr.com/ugd/d2751c_a12ad889a21c4b298d68976d45a8d79e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/17022365204.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/sepsis_guidelines_fluid_resuscitation.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/windows_automated_installation_kit_2.0_download.pdfIn PDF document text
    • https://ecab545c-19d2-4654-b6ac-fb8b9749f5ba.filesusr.com/ugd/e5412a_13cdacdb5eaa4689b8b8d7d0d2468b8e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/banula/32647553490.pdfIn PDF document text
    • https://s3.amazonaws.com/zumezeviwakiz/72307081138.pdfIn PDF document text
    • https://6593eeda-10fe-4128-810f-cbbc79f0a4f8.filesusr.com/ugd/c0a4bf_ff98fbc0ebc44372bcbdcadd41faf7ec.pdf?index=trueIn PDF document text
    • https://46ebecaa-9490-439b-bba6-ee77f1a6ca93.filesusr.com/ugd/cee8a1_44bc5cb5e4db415db1486c093d7ed343.pdf?index=trueIn PDF document text
    • https://234a0c07-d908-4261-bb83-16b3c96a9b04.filesusr.com/ugd/73e0e6_882c14b1322b4e1a80c8af11b534377f.pdf?index=trueIn 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_off0001429e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1429E 5264 bytes
SHA-256: eea4c3beef07a83f59ed608b58cfd8f7c8ea382d3621b0f139334a8e37c9eedc
font_01_sfnt_off00015467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15467 12292 bytes
SHA-256: c0cc3965f7ce156fb2003331bdb584383d611ddea25203dfcf8530b8a472b4a7

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