Malicious PDF — malware analysis report

Static analysis result for SHA-256 65b8cffb4199f9f7…

MALICIOUS

PDF

73.2 KB Created: 2021-03-14 03:48:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a183b4f968a925418134758f3fa1b95b SHA-1: 2459edb902a53cc7e5bc66c2daf7908fe01d3eea SHA-256: 65b8cffb4199f9f7e068a8ebcb7bcbace98e021be9249300fcbc4a3198a40d8e
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'botokaw.ru', which is likely a malicious domain used for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to a popular TV series, aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • 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://botokaw.ru/strik?utm_term=where+can+i+watch+war+and+peace+mini+series
    • https://static.s123-cdn-static.com/uploads/4476952/normal_5fddb951ec45d.pdf
    • https://static.s123-cdn-static.com/uploads/4470016/normal_5fe09d36c7044.pdf
    • http://003-center.ru/woxikuranonagajepuzurebu67ng2.pdf
    • https://cdn-cms.f-static.net/uploads/4418391/normal_60411148132e8.pdf
    • http://topstop.site/cen-tech_multimeter_replacement_leadsud66o.pdf
    • https://cdn-cms.f-static.net/uploads/4411001/normal_603e2bbd5b35b.pdf
    • http://beach-fruit.fun/forgotten_land_literary4vb2j.pdf
    • https://cdn-cms.f-static.net/uploads/4421781/normal_602d2e353f16b.pdf
    • https://cdn-cms.f-static.net/uploads/4383791/normal_60192e9b73787.pdf
    • http://weareanonymous.org/gebojapa1qxpm.pdf
    • http://domainlimax.xyz/5_inch_height_gain_free_downloadcli3l.pdf
    • http://povenom.22web.org/how_to_open_pocket_juice_portable_charger.pdf
    • https://static.s123-cdn-static.com/uploads/4481058/normal_5fe38cfd0bc7c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://c5c27394-2042-4749-9b39-d1c24dcbd9f0.filesusr.com/ugd/e9b987_54b400e0488b431c901482aa1fd2ae9e.pdf?index=true
    • http://fowewimoseno.epizy.com/xolenevadovonedakosade.pdf
    • https://bdc3fad0-85dd-4e34-85f7-620d54d4ff6f.filesusr.com/ugd/10cedf_29b5f27462af42768f08e7087c209bfc.pdf?index=true
    • https://uploads.strikinglycdn.com/files/920a7a5f-4b3d-48cd-9c6a-8b6ffbd62409/dasipuxavimadixelu.pdf
    • https://55d63786-14d6-44de-84d0-33f1fb383c44.filesusr.com/ugd/45fd81_200e79376ef34d2887bba0f7b0efdc98.pdf?index=true
    • https://uploads.strikinglycdn.com/files/649d6c21-4bdf-4d3e-b4c6-5225e54a513e/dujovosifagobamufi.pdf
    • https://uploads.strikinglycdn.com/files/645e02e8-13b0-448f-950e-750a3a1d755e/spanish_to_english_translation_sentences_free.pdf
    • https://uploads.strikinglycdn.com/files/13d4ba2b-7b70-4ee6-afc9-7243cb18df8b/rimitokijelemafatedal.pdf
    • https://4e33067b-0f13-4bed-bb9c-ea95f768fd7c.filesusr.com/ugd/23924c_9c4a170a873a4a15b6aa41997e02c846.pdf?index=true
    • https://8f20b4bd-83f7-4a55-8c6f-e9501e2e061c.filesusr.com/ugd/c1c462_83ce49a96b45429ea9e7089a990497e3.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_off0000dca7.bin
8defee03262336e46cd79bf5efd7c09419f15d6eb758895afe592bc85f703d75		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA7 5384 bytes
font_01_sfnt_off0000eee2.bin
4e9e3a97e3ca866dc288dc5778dafc28ba250c4c63cf6422f2aeec4c985b6dce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE2 11608 bytes

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