Malicious PDF — malware analysis report

Static analysis result for SHA-256 29b043e3961b8456…

MALICIOUS

PDF

77.9 KB Created: 2021-02-20 04:11:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 0045ebc940546f95e2262f5db80a109f SHA-1: ee4b5c8a0c29280a2223484cd280d9adf1eb7e71 SHA-256: 29b043e3961b84563c05873f83c29230043ed5dffae576b1869e93ca21a4da76
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_LINK_FARM' suggests the document contains numerous external links, likely to facilitate phishing or distribute further malware. The primary external URI observed is 'https://baarspo.ru/strik?utm_term=soundarya+lahari+uses', which is a strong indicator of a malicious campaign.

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://baarspo.ru/strik?utm_term=soundarya+lahari+uses PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4502436/normal_5fe589494eb4e.pdfIn PDF document text
    • https://cdn.sqhk.co/nixenexax/hHhhkwe/xuduniserenudamege.pdfIn PDF document text
    • https://povizizumor.weebly.com/uploads/1/3/4/6/134636509/nurotexin.pdfIn PDF document text
    • https://lamuwopinu.weebly.com/uploads/1/3/4/6/134632291/63b0e8e.pdfIn PDF document text
    • https://lixavoje.weebly.com/uploads/1/3/0/9/130969842/kevusowubazoto-kesilonididi-bilokav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470524/normal_5fd24b3214343.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381318/normal_600d65747e798.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463807/normal_5ff421fedc73b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365660/normal_5fe2ecf470390.pdfIn PDF document text
    • https://cdn.sqhk.co/lolajelor/hggjq2l/international_superstar_soccer_2_snes_rom.pdfIn PDF document text
    • https://gisimezibeze.weebly.com/uploads/1/3/0/8/130874543/39ab5a72.pdfIn PDF document text
    • https://cdn.sqhk.co/tovozovuzedu/j647hdU/basketball_game_length_uk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489058/normal_5fda8173959e6.pdfIn PDF document text
    • https://gafepidata.weebly.com/uploads/1/3/0/7/130776025/bowuzibobikor_luxidizima_wibigujusotewut.pdfIn PDF document text
    • https://sopoxovolofu.weebly.com/uploads/1/3/4/5/134509961/rirugenonev.pdfIn PDF document text
    • https://baduzasozem.weebly.com/uploads/1/3/1/4/131407439/niwarozovojis_gatekoximuk.pdfIn PDF document text
    • https://zazalefofano.weebly.com/uploads/1/3/4/5/134578352/nirite.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473056/normal_5fc67b8a63eae.pdfIn PDF document text
    • https://cdn.sqhk.co/tinulafi/Aj7hiid/97397849176.pdfIn PDF document text
    • https://robavefozaxun.weebly.com/uploads/1/3/4/3/134379548/zexuvu_bawajekur_dokowizofox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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_off0000e95f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95F 4920 bytes
SHA-256: cf81b53c081cecb1f0322a201b66d777a3f4eb30bc78a2b83d95aa8083cdad0c
font_01_sfnt_off0000f9ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9FF 10044 bytes
SHA-256: 168138d00d9c42ca9138e70688dc5089e4981cbb3f5dfd283f15ae946d850b60
font_02_sfnt_off00011c5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C5D 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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