Malicious PDF — malware analysis report

Static analysis result for SHA-256 09bf55e6f3533713…

MALICIOUS

PDF

95.4 KB Created: 2021-03-21 02:30:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: bdbfdb7cc9ec4326f06014137cf87206 SHA-1: d67e2b38a57b194b3fd51816abffcd17150f4df9 SHA-256: 09bf55e6f353371399c99a019ee7b548bd6a3b36e9c17ffc642043096acfcfcb
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document contains numerous external URIs, with one prominent URL being https://botokaw.ru/strik. The presence of embedded URLs and the overall structure suggest an attempt to redirect the user to a malicious site, likely for phishing or to download further malware.

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://botokaw.ru/strik?utm_term=what+is+a+house+blessing+ceremony PDF link annotation
    • http://disconto50.info/characteristics_of_service_quality41nek.pdfIn PDF document text
    • http://newuwedeza.mypressonline.com/rugakunapamekirazafoj.pdfIn PDF document text
    • http://fakts.design/suxott68f8.pdfIn PDF document text
    • http://micrometer25bill.site/ozymandias_poem_meaning_in_tamilebax1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nimanexobubibub.onlinewebshop.net/the_dark_knight_trilogy_the_complete_screenplays_christopher_nolan.pdfIn PDF document text
    • http://tesoxukezeziles.epizy.com/wefokigomudosovikilega.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75993477-b6fb-49ea-a266-735f9f6f3d3c/harga_mackie_1604_vlz_pro_16_channel_mixer_manual.pdfIn PDF document text
    • http://misiwoferejisuj.rf.gd/51582823142.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/depths_of_malatar_hm_guide.pdfIn PDF document text
    • https://1fc3e790-19e1-43b7-bae7-d09a953f51fe.filesusr.com/ugd/2c608b_fbd102cd638840b09b8dfa8b7a50f9ec.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c759e4cc-b160-4986-85e0-f5997ba0f534/cnc_programming_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a8743b2-a4a5-498d-8acf-6f0248ab9297/koxabuf.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/dnd_character_sheet_excel.pdfIn PDF document text
    • http://pabizex.atwebpages.com/linux_command_line_converter.pdfIn PDF document text
    • https://c3373aeb-ed74-4f2d-b631-fa679e0a3f6f.filesusr.com/ugd/cbe7f7_24871d3eb1014c7b9547fe0acbbddfbc.pdf?index=trueIn PDF document text
    • https://12c21f6a-324e-488c-af83-7e1076049286.filesusr.com/ugd/e84f25_20aeb6d25ecb45448103ef776a58bbee.pdf?index=trueIn PDF document text
    • https://0fdd9f25-8366-4660-9463-376fd915ad39.filesusr.com/ugd/c16cf9_25b908c0713c4866972de3ff888c7655.pdf?index=trueIn PDF document text
    • https://52431b39-7396-4b0c-bcaf-ab72d449a1bf.filesusr.com/ugd/f8cef3_149e57121cb24161ab61121711fe4dfe.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/be3a16a5-1899-47a6-a9b0-237d08533801/21839476737.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/lanug.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_off00013562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13562 5468 bytes
SHA-256: 47344707e37751ac283249f2d73eb4fbf7ad4799ced435a33152e344d912e268
font_01_sfnt_off000147e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147E5 12060 bytes
SHA-256: 9d3b3c289e9bb601d1a7db4bd9f12e76c0c601b6554e325c5bfafd538067981d

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