Malicious PDF — malware analysis report

Static analysis result for SHA-256 3be67e4a96c9eca9…

MALICIOUS

PDF

77.0 KB Created: 2021-03-02 01:08:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c953df548cfaae69c14a8ef2da13d6ea SHA-1: e0bfa92464cfe9a1f98f3f205cb93464bbcb2ef5 SHA-256: 3be67e4a96c9eca9a81e916b421352f8d22eb724fe106a39ec1e28dd5db00ac7
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs, with one prominent URL suggesting a search result for a product manual. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing lure designed to redirect users to malicious content.

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://gimoguvi.ru/wix?keyword=garmin+drive+61+lm+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366637/normal_601846d707a14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487381/normal_601970122ed3c.pdfIn PDF document text
    • http://daludaja.getenjoyment.net/how_to_use_dictation_commands_on_mac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366947/normal_5feb79e97f094.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474478/normal_5fffee409e85d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475559/normal_60126507221b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485698/normal_600ab1a563e91.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445337/normal_5ff4ecad05f03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454819/normal_602d9b5694ae9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365525/normal_5ff035dee8f33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373502/normal_603c223ed9570.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/bepukuba/adobe_indesign_cc_2015_kuyhaa.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/2010_triumph_bonneville_t100_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/19448320018.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/shinedown_attention_attention_bonus_tracks.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/fiwukirazebe.pdfIn PDF document text
    • http://tiluxusimutine.atwebpages.com/why_is_my_kenmore_gas_dryer_not_drying.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/modinagamebatilo.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_off0000dd95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD95 5092 bytes
SHA-256: 360f78e453778ea5ac3dc85f237d0e451a9c39ac8653adfbf58a7d36ca7a59c2
font_01_sfnt_off0000eedb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDB 10040 bytes
SHA-256: 8dba3a76464ac1d48911a6a3226106a2423d6ee7c11dd8129be7b169ea96df57
font_02_sfnt_off00011180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11180 16240 bytes
SHA-256: 0674acd334b5d9d24fca46324cf24cdceda2da50095ae44f67deaeca14b27464

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