Malicious PDF — malware analysis report

Static analysis result for SHA-256 26ff4d0b7d2cc87c…

MALICIOUS

PDF

72.3 KB Created: 2021-02-27 14:02:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 407f276a08ef507e94b8b3eec4ccdaee SHA-1: 11b6f7c38fd6b2f6184f2571d7dbb9dc5e91c91c SHA-256: 26ff4d0b7d2cc87c3cfe445568d1ff8d7ac2f4c46df5670b8c3d9c13822fc5a6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website offering information about a Yamaha Kodiak 400 oil change kit, which is likely a lure. ClamAV detected this file as Pdf.Phishing.Trojan-d2568dad23a94d95, and ML classification strongly indicates maliciousness. The presence of an external URI points to a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://resalured.ru/award?keyword=2005+yamaha+kodiak+400+oil+change+kit PDF link annotation
    • https://cdn.sqhk.co/xuwadezab/xjiY1jf/random_build_battle_themes_generator.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471455/normal_600a833d3ff7a.pdfIn PDF document text
    • http://thehensleys.org/departmental_test_answer_key_treasury_codeiy8og.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450639/normal_60222eeea5e3e.pdfIn PDF document text
    • https://cdn.sqhk.co/xekemini/eigDchw/28119216632.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/hcbjbh8/get_virus_warning_on_mac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412582/normal_600399101a29b.pdfIn PDF document text
    • https://cdn.sqhk.co/ponajadu/jE7vgiw/national_corvette_museum_raffle.pdfIn PDF document text
    • https://cdn.sqhk.co/zubavagi/jujdic3/ombre_nails_coffin.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/ghbgcYN/mirrors_lyrics_meaning.pdfIn PDF document text
    • http://naguvogegexaze.22web.org/62933383135.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxubefe/iegiDib/ninja_air_fryer_xl_manual.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tipixerokofor.epizy.com/baby_shark_remix_twerk_free.pdfIn PDF document text
    • http://palalujopaxuv.epizy.com/challan_online_form.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_off0000e03b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03B 5636 bytes
SHA-256: 0f3d401e15d431a060b18a009f6175aba88c4e179a89145d0ff89a2d7c035fe2
font_01_sfnt_off0000f35f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35F 9644 bytes
SHA-256: 102483a61a6bb32f4efb9a01e07bdb025561595106550bea95cf735f7682826f