Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ecdc8ca5bde6722…

MALICIOUS

PDF

83.0 KB Created: 2021-02-17 02:40:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b17c99ce0f3d1567b91651a6a9f1dca1 SHA-1: fa7470089d680a1aee0985a58b0961a629a1f26c SHA-256: 0ecdc8ca5bde6722588dbadfc306d131385d944691fca553a433c03869ca3213
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a manual for an ice cream maker, likely to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, but 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://leonvi.ru/strik?utm_term=rival+6+qt.+electric+ice+cream+maker+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4501233/normal_600b52b6d9e60.pdfIn PDF document text
    • https://cdn.sqhk.co/lojumisebu/gjgdEie/20957105424.pdfIn PDF document text
    • https://cdn.sqhk.co/feguzuvubut/iiib68o/nostalgia_popcorn_maker_replacement_parts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421354/normal_5ff3c0c389fa0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412763/normal_5ff2c501d9c14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494661/normal_6026361dec7e5.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/il5hQig/33104066727.pdfIn PDF document text
    • https://cdn.sqhk.co/gesokusa/qJNSihe/cool_camo_mc_skins.pdfIn PDF document text
    • https://cdn.sqhk.co/renapudovi/gjhhfts/95991746136.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426815/normal_6005cd03dcb7c.pdfIn PDF document text
    • https://cdn.sqhk.co/wubofuse/gejgihV/zujurazet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/rimonozutonokom.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/continuation_sheet_3_lpa.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_off00010788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10788 5212 bytes
SHA-256: bc59eef17a0fffc9da55db28a76ffae5863568df847826106c5bc5669f7cb333
font_01_sfnt_off00011943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11943 11064 bytes
SHA-256: 2a5bf3351ded9e401a67aeec57adc0cc4f86344c29b57cc3efd452e5adc04117