Malicious PDF — malware analysis report

Static analysis result for SHA-256 345d2a9e0910d3ed…

MALICIOUS

PDF

80.7 KB Created: 2021-03-16 00:01:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ac21e9c7cf9b1964177bbdcf70cae29 SHA-1: 1412cc646fd7fca835eb879b364664a9baff1cad SHA-256: 345d2a9e0910d3edd7674f6fc0f4da9d1f63fbd09ef954127c3b6224108885b9
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL. The ML classifier and ClamAV detection strongly indicate maliciousness. The embedded URL, 'https://druttle.ru/wix?keyword=wow+wotlk+leatherworking+guide', is likely used to redirect the user to a phishing or malware distribution site. No scripts were extracted, but the PDF structure and embedded URI are sufficient indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/wix?keyword=wow+wotlk+leatherworking+guide
    • https://static.s123-cdn-static.com/uploads/4411512/normal_5fcb32d249d84.pdf
    • https://static.s123-cdn-static.com/uploads/4454171/normal_5fdfd92344080.pdf
    • https://static.s123-cdn-static.com/uploads/4461746/normal_5fdf7e8912ba9.pdf
    • https://cdn-cms.f-static.net/uploads/4454046/normal_5fdba86db2cb1.pdf
    • https://cdn.sqhk.co/bijilixiger/dnibggS/7849491823.pdf
    • https://cdn.sqhk.co/joxudilabi/O1jaDii/toyota_yaris_manual_2013_olx.pdf
    • https://cdn.sqhk.co/ligumorik/PrhaRhg/8595195294.pdf
    • https://cdn.sqhk.co/busumodofu/bjavKzR/sitalevafaruxatawuzuko.pdf
    • https://cdn-cms.f-static.net/uploads/4464078/normal_6037dd704f3b0.pdf
    • https://static.s123-cdn-static.com/uploads/4459163/normal_5fca66a91a136.pdf
    • https://cdn.sqhk.co/vinasujitupe/feLzKje/bavemijegafomubuzo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://d2faa26e-66ca-44cd-8f84-883624a71019.filesusr.com/ugd/dbbfd0_7f7ada52517d4088982252e8dc163b67.pdf?index=true
    • https://uploads.strikinglycdn.com/files/0d3df807-0cff-4de8-bd12-daee918b9e2a/3933250280.pdf
    • https://469ee322-798e-4c1d-9571-af6764901f97.filesusr.com/ugd/57169b_a8e21a83ebbe4435862c3023859e4231.pdf?index=true
    • https://uploads.strikinglycdn.com/files/07e395d7-6738-4cba-a0c1-b06d97e03b7f/different_types_of_clothes_materials.pdf
    • https://7ed754b6-a209-4558-9281-0032c7ee8ade.filesusr.com/ugd/4329d7_cbb1b3d1990e4a7e937a12c1007c5312.pdf?index=true
    • https://507d1b22-ea03-4061-a262-f79425337ca2.filesusr.com/ugd/a374b9_b18037a13705443195b3c544476261d2.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c7f6bfe5-9b34-4cdf-b196-e77403e881dd/56657046232.pdf
    • https://5c2df1de-05ea-4e17-9aa3-38adc7ce3153.filesusr.com/ugd/ddd609_aa395d898dc348348882cd0b2f5f050b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/ceeb6a2f-d153-4377-ba3c-8f30d968cfec/15551297586.pdf
    • https://uploads.strikinglycdn.com/files/9c0517b5-279d-4474-bfbe-d33dc911a4ef/rejopevipi.pdf
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2fb.bin
541f99e296b559a09909350cc222d4d04a0815016c697e05a721af4ffb81e53b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FB 4960 bytes
font_01_sfnt_off000103e5.bin
90eb1cae90e4996e7fef38ef8dcb94131fc6a2db1f66d03a85ea185b785825a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103E5 10368 bytes
font_02_sfnt_off0001278f.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1278F 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.