Malicious PDF — malware analysis report

Static analysis result for SHA-256 b08e9e8dfb5e0f61…

MALICIOUS

PDF

74.1 KB Created: 2021-01-27 11:28:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 3ff0e3ec95b0a7ec6179e2df1e0ee091 SHA-1: 8a3c596786ec84edc25efcd063cd6547f55c5ad8 SHA-256: b08e9e8dfb5e0f6154f2694be2cbcd00b2ac4d0a1aed33c6486980ad709729a7
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to a URL that appears to be a lure for a game download. While no scripts were explicitly extracted, the PDF structure and the nature of the embedded URI suggest it's designed to trick users into visiting a malicious site, likely to download a secondary payload.

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://trafffi.ru/wb?keyword=jungle%20sniper%20hunting%203d%20game%20download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454807/normal_600be6a8aa5ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369336/normal_600afbee44818.pdfIn PDF document text
    • http://infonewsuk.site/nostalgia_electrics_retro_snow_cone_makernbr1l.pdfIn PDF document text
    • http://geekcods.com/shooting_grizzly_bear_youtube55pmr.pdfIn PDF document text
    • https://cdn.sqhk.co/jukelifawap/hfEMsl1/89129289379.pdfIn PDF document text
    • http://poverkavoda.website/us_army_counter_stickman_apkhveeg.pdfIn PDF document text
    • http://zvezdasevera.online/dakejotigcxx7i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465024/normal_5ff1f358ce0fb.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/kibavutibeved/1339817069.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/97571118374.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/husqvarna_chainsaw_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/65520994478.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/gasorebuzutofarubi.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/wutudatazusuze.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE1 5616 bytes
SHA-256: 995b591a8cd192cb603476f719cb76c1333caf20aceb632083485a983a6bbd65
font_01_sfnt_off0000ddd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD8 12408 bytes
SHA-256: 40ee80c5a27f6d7308e13aa38433b419931e6d7aa9c4ce8d88fc04e2f4809320
font_02_sfnt_off00010592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10592 16264 bytes
SHA-256: f3d57df04cdb194e46cfff8b4835c5d2f279e7288315b2039a53678039656b22

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