Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc08e5315dcf9746…

MALICIOUS

PDF

84.1 KB Created: 2021-02-21 00:19:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: c3be3bb6b6e14d59b04d072e935a23c9 SHA-1: 5dcdc7147e9b00c95bb77f702cc568178e4bdda8 SHA-256: dc08e5315dcf97460560b40212f86158e667829a95765cb9a5c0d510098ad241
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, which is a common tactic for phishing or distributing further malware. The PDF structure itself shows signs of manipulation, with duplicate object bodies, further suggesting malicious modification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/aws?utm_term=navy+et+nec+codes PDF link annotation
    • https://lijipowurop.weebly.com/uploads/1/3/4/3/134314174/6071285.pdfIn PDF document text
    • http://arm-watch1.club/obituary_for_lady_macbeth2ndrn.pdfIn PDF document text
    • https://mogobuzuxoxede.weebly.com/uploads/1/3/0/7/130740257/8972655.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454543/normal_5fc6b85b656d0.pdfIn PDF document text
    • https://ligonulijer.weebly.com/uploads/1/3/5/3/135318365/lizoliv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465688/normal_602fac9d7100c.pdfIn PDF document text
    • http://lastmarkt.ru/aprendizajes_clave_de_bolsillo_preescolar8dski.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501989/normal_60296952a6a3b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485442/normal_5fe3f404b5e88.pdfIn PDF document text
    • http://guxiket.iblogger.org/frontline_commando_d_day_hack_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366980/normal_60216cccc2088.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403673/normal_5fcf774289c92.pdfIn PDF document text
    • http://damvglaz0.xyz/bus_ticket_editable_format614lz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485702/normal_5fcea79a5bd78.pdfIn PDF document text
    • http://ilkertr.shop/japirumef1rdc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nuluvikubidobo.epizy.com/the_challenge_war_of_the_worlds_season_2_spoilers.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D35 4936 bytes
SHA-256: c03ab6beb6a2ef2432a14bdfbc5adb53d54cd7598b1057e56a01742c1b292941
font_01_sfnt_off00011e29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E29 10976 bytes
SHA-256: 591a9065b711d9c244159c24fb6ba3e6f75ef31f8e68ebf068ebf716f9eeeaae

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