Malicious PDF — malware analysis report

Static analysis result for SHA-256 29e07422cb7fb972…

MALICIOUS

PDF

176.2 KB Created: 2021-02-27 06:06:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: c1120e41251497d9436acc040e36f613 SHA-1: 56b4ad297bc938bd3456317d237bd2efd8fb4d36 SHA-256: 29e07422cb7fb972d16728a1809649280eed5286c07a5d44cec67dbbb4a7c6c8
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier assigned a high probability of maliciousness. It contains an embedded URL pointing to 'jumiwimov.ru', which is likely used to host a malicious payload or phishing page. The document body, though heavily obfuscated, contains text related to 'Farmingdale elementary school rating' and 'wkhtmltopdf', suggesting a lure to a compromised website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://jumiwimov.ru/wix?keyword=farmingdale+elementary+school+rating PDF link annotation
    • https://cdn.sqhk.co/zowonefaso/ievWKzP/61340898491.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416125/normal_5fdec90cea512.pdfIn PDF document text
    • https://cdn.sqhk.co/dusujukakal/eUhipgc/set_it_off_stream_deutsch.pdfIn PDF document text
    • https://werogevudabewox.weebly.com/uploads/1/3/4/8/134876313/tatadawi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422161/normal_600c9354a954f.pdfIn PDF document text
    • https://lixubirenolona.weebly.com/uploads/1/3/4/6/134669397/4a1dc44dc3.pdfIn PDF document text
    • https://cdn.sqhk.co/nimabugokofa/e4ghPxi/huey_burger_nashville.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393359/normal_6006419c08bcf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450723/normal_6007d9b2da7b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476943/normal_5ff0be94ea44a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393353/normal_60361fa13b5d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419857/normal_600a4b5e03fb1.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/the_little_prince_story_characters.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://tobikinos.onlinewebshop.net/how_to_pair_xr2_remote_to_sony_tv.pdfIn PDF document text
    • http://vawerudarasikow.myartsonline.com/sukurumobupi.pdfIn PDF document text
    • http://gurabagoderes.atwebpages.com/95943144357.pdfIn PDF document text
    • http://zesafemumibow.myartsonline.com/sun_joe_spx3000_will_not_turn_on.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00026fa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26FA1 5200 bytes
SHA-256: 01200aae1a1a7aae9ce550fb55394e6f411f80bc49d969d0207bc687cec5ec8f
font_01_sfnt_off00028120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28120 10308 bytes
SHA-256: 18900f03e4dec558be80ae0a76fa8dea69d28b5de52ceb56bf5cef427f8962e9
font_02_sfnt_off0002a469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A469 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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