Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddd2fbf3467e3db2…

MALICIOUS

PDF

73.4 KB Created: 2021-03-16 03:57:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 3683bd481aae010e8a4733b84c64cb79 SHA-1: 03e6b9c52236968a2b797f0cc694cc83196022f3 SHA-256: ddd2fbf3467e3db2430ce05ea3fd2d99fa6b92e2904ea071fd4893b9af854171
126 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to suspicious domains and are likely used for phishing or to download further malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of links on disposable hosting, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://maypoin.ru/strik?utm_term=sony+cyber+shot+dsc-w800+charging+cable PDF link annotation
    • http://timurberg.ru/kindle_oasis_3_specsf9258.pdfIn PDF document text
    • https://bozadabeduli.weebly.com/uploads/1/3/4/8/134869561/2284468ed.pdfIn PDF document text
    • http://italy50wow.pro/72826925779e03pw.pdfIn PDF document text
    • http://loduwij.scienceontheweb.net/95410043560.pdfIn PDF document text
    • https://pufujodixig.weebly.com/uploads/1/3/1/4/131438007/fozanirejigegaw.pdfIn PDF document text
    • http://gokawojop.scienceontheweb.net/lumevaxinatazera.pdfIn PDF document text
    • http://frut-tree.site/gupoziperirisojofihalnp.pdfIn PDF document text
    • http://makasef.22web.org/doxewima.pdfIn PDF document text
    • https://pexerewiku.weebly.com/uploads/1/3/5/3/135313352/vaboloxivoj_boxawofodoxedig_rezawa.pdfIn PDF document text
    • https://diwamelebo.weebly.com/uploads/1/3/4/1/134108813/kuzuje_dulowi.pdfIn PDF document text
    • http://wspring.space/kiwozeqjxcm.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/tesodagiwor/bewobezavedosafafutibome.pdfIn PDF document text
    • https://9e7b01ce-91ce-414a-93c5-ade8df4b7359.filesusr.com/ugd/cfbfd2_a01a9ba1cfff457a9961880161374a74.pdf?index=trueIn PDF document text
    • https://d5f1d3db-1598-48d0-a061-764c190a6564.filesusr.com/ugd/866690_8e671392908d49e5973f216c2416f3a3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/sixuzenobog.pdfIn PDF document text
    • http://kogosiji.epizy.com/xoxudatalovedix.pdfIn PDF document text
    • https://ff536187-e25a-4bd2-965b-ff1113cf40b0.filesusr.com/ugd/bfcccc_bfc493b8721046cc904612e9be6f82c9.pdf?index=trueIn PDF document text
    • https://1fc3e790-19e1-43b7-bae7-d09a953f51fe.filesusr.com/ugd/2c608b_54896cae0c4b4e44b61bbced2373dd76.pdf?index=trueIn PDF document text
    • http://bafimilatape.epizy.com/zapepabepomapafobub.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/does_roomba_671_have_mapping.pdfIn PDF document text
    • http://bowukedogatowo.epizy.com/72262495807.pdfIn PDF document text
    • https://5e9c932d-19a8-4d5a-a970-d4bc0bcb832b.filesusr.com/ugd/bae0a0_e4c9b66267a04bdf8b76597ef7da744b.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD169 4100 bytes
SHA-256: 9b9382ce7cf0fdcacb6b0c8a49379f3746678e2c765134d0dc7c739edf44f826
font_01_sfnt_off0000e009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE009 6008 bytes
SHA-256: 4233182f6a7c03a45bf5a1e28904bd46a7ffaa8783fd81862c24bba4e3e0c23d
font_02_sfnt_off0000f48c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF48C 10292 bytes
SHA-256: cbdd398524700a1e1f3dba16e11e0d974945ff4e841e6969610489693d773d3c

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