Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc2b7af3c910dc31…

MALICIOUS

PDF

67.7 KB Created: 2020-12-31 02:10:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 20bbfaca94b561d542e454ba77cdc761 SHA-1: 96f1c9468524327b302bfa58cf24394db50a4a88 SHA-256: bc2b7af3c910dc31c9b96440e7c1948afa0ae1e74220cf92d3d57c906a563795
104 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. The file presents a deceptive download button. 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffset.ru/strik?utm_term=hot+country+hits+radio PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373522/normal_5f8a146f9843b.pdfIn PDF document text
    • https://cdn.sqhk.co/dediwifime/Iyif6Kk/diamond_mines_in_south_africa_map.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389581/normal_5faf635247e52.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzefegevo/ejjeTId/crown_the_empire_what_i_am_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/mawejoxejobe/jGjbF3w/download_mod_alien_zone_raid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369318/normal_5f88a6600fd89.pdfIn PDF document text
    • https://cdn.sqhk.co/wozepefiga/hcPofKD/tinawonabudefiwowovijod.pdfIn PDF document text
    • https://cdn.sqhk.co/wafixagi/gghifhb/patezonis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388422/normal_5febb747b40cc.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/livivuvuwugeb/sleepy_poet_gastonia_nc.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/32428357299.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b790e40-4a99-463a-acfb-1f99d90f01c8/gadometavomojured.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/bebivepowerata.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/lirutatepuwuzavuxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c1f09eb-cbf2-46d6-b226-c86a95998401/sengled_pulse_solo_reset.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/wapumajezafa.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/52592137034.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_off0000cb6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB6F 5056 bytes
SHA-256: 31b86ab69656350064e71e6a07f889234e524b895a0094418c4d504b07d8f9d6
font_01_sfnt_off0000dc9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC9E 11324 bytes
SHA-256: 9a057e8d6d6c110617b3003a930f404d2ec0ec4c76bbed62d689484ac4e94e90

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