Malicious PDF — malware analysis report

Static analysis result for SHA-256 61d176ebce7fce31…

MALICIOUS

PDF

79.9 KB Created: 2021-03-24 13:18:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dbbdf441bbda09a1070b08db68079bdb SHA-1: 7aab54b76edb3c191dfc6bc0f802ee8cc264337d SHA-256: 61d176ebce7fce31d70a23fa0a37c70233c98ca59ebc05dcff4b3244577210b5
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various websites. One prominent URL, 'https://maypoin.ru/wix?keyword=good+luck+rituals+for+lottery', suggests a lure related to lottery rituals. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the overall structure and linked URLs point to a malicious document designed to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wix?keyword=good+luck+rituals+for+lottery
    • https://baxelawinojiw.weebly.com/uploads/1/3/4/3/134333718/ec8f52.pdf
    • https://wogaxuporig.weebly.com/uploads/1/3/4/4/134443700/a09699a84.pdf
    • http://usesalle.xyz/what_to_wear_bride_second_weddingzjpzi.pdf
    • http://useraisins.pro/olympus_tough_tg-5_vs_tg-6io9cx.pdf
    • https://cdn-cms.f-static.net/uploads/4495846/normal_6010fa0d40be7.pdf
    • https://cdn-cms.f-static.net/uploads/4380890/normal_60123e1823550.pdf
    • https://cdn.sqhk.co/jedugifaxido/jJ0jigh/financial_times_mba_rankings.pdf
    • https://gobodukigibab.weebly.com/uploads/1/3/1/8/131856162/911133624.pdf
    • https://nowagomasililub.weebly.com/uploads/1/3/0/7/130775830/901201.pdf
    • https://cdn-cms.f-static.net/uploads/4477913/normal_6024abd438235.pdf
    • http://zathkatow.xyz/4944914985942zkj.pdf
    • https://cdn.sqhk.co/kupujape/G8ggihs/missing_link_2019_trailer.pdf
    • http://barcaporirternet-interbank-pe.com/660869945314m489.pdf
    • http://autoport76.online/puposefedotoviowfg0.pdf
    • http://help-feedback-amzn6.xyz/tinifawonefevaxesmej3.pdf
    • http://topvideo.design/family_farm_seaside_game_walkthrough99u37.pdf
    • http://forexgeeks.net/bacalaureat_2015_rezultatenz9ab.pdf
    • https://ronabamipiboti.weebly.com/uploads/1/3/4/5/134598089/3222114.pdf
    • https://cdn.sqhk.co/derebeduno/igEjaS3/47427991526.pdf
    • https://cdn-cms.f-static.net/uploads/4483082/normal_603b8c2209458.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cad90261-f038-4e8a-b384-2e0e37e6cb8c.filesusr.com/ugd/4c4e45_fc0f214331964424b632fc3fd99e82ff.pdf?index=true
    • https://d12d056d-c16f-42d2-bb36-b12dbd13f8e5.filesusr.com/ugd/a2005d_92189461f509414a8ec9148574484ab1.pdf?index=true
    • https://56076a71-1b70-41e8-afe1-d547c394b4ee.filesusr.com/ugd/ab0d05_285f743fed0040bb9c13bd5aaac8fd30.pdf?index=true
    • https://c809e8a6-5bdf-489d-8d8c-df4e4638a115.filesusr.com/ugd/45a296_cc115c04819a42f59d0655962b13bd26.pdf?index=true
    • https://ce2645ba-e89a-43d5-afff-5c0150757291.filesusr.com/ugd/c63dba_8db7f545be354d149426ee7766040075.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8e5.bin
bafbf21d56f413bcfcc4d47fe7baa2911fba27e958fcb28305cff123c78ffcf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E5 5212 bytes
font_01_sfnt_off00010ac0.bin
2fa1363eb419cb52464725e63444d156e976a57c8567af3a821e96b9fc0b0fc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC0 11332 bytes

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