Malicious PDF — malware analysis report

Static analysis result for SHA-256 23353f17ff8e291c…

MALICIOUS

PDF

71.4 KB Created: 2020-12-24 13:21:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a7a15c781e79fc43d9c8aca7ce15a825 SHA-1: 960b6ddb8bad4fbe231de79ab15f52f17c65c5e2 SHA-256: 23353f17ff8e291ca9a25352a9bb63ee68439adac6e53cdb4e2278c1152953a1
116 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a QR-code lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://traffnew.ru/strik?utm_term=wifi+file+transfer+pc+to+android+without+internet PDF link annotation
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/votufigor-zokukuxodere-pubijudibofo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380214/normal_5fda941c73c72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456998/normal_5fc56c3ba40d1.pdfIn PDF document text
    • https://cdn.sqhk.co/tesikotuk/aDv8hb1/91076661712.pdfIn PDF document text
    • https://cdn.sqhk.co/donewipimep/RTzdrSg/helicopter_crash_egypt_today.pdfIn PDF document text
    • https://cdn.sqhk.co/bofogarabu/oghvhfZ/84187455884.pdfIn PDF document text
    • https://cdn.sqhk.co/lisesemafo/fjbgQhe/54704105782.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415745/normal_5fd80cabcb20e.pdfIn PDF document text
    • https://laverikiwife.weebly.com/uploads/1/3/4/5/134502667/4004344.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/turip/industrial_meat_grinder_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/foritejixuwuzisamekatig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2125952b-26dd-42a3-863b-cd8578c6644f/modikulomojekeviv.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/dazamojugikepiwegugupuda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16b410e2-4f97-4a9b-9d1a-e931b0a0a894/99279297713.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/kotemixebadedupi.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_off0000d0f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F0 5348 bytes
SHA-256: e0d0ce6218c2ecf36a0944328a55d4c35f5e434b0d75d6de1c6e161dbed564e4
font_01_sfnt_off0000e329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE329 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000ebb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB6 10668 bytes
SHA-256: 9d208be67853cf7d339c1462917f30980f79ae2d1bce6f26c26c5b555d588143

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