Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3809099d4fd3437…

MALICIOUS

PDF

90.2 KB Created: 2020-12-24 12:32:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 586ed001a3e94a22eccb1e556041eef2 SHA-1: 1c296dfa9db3e3247133945bd0368f1edfed56a1 SHA-256: c3809099d4fd34372b0e4aac074268df6d635612ff942bb61cc764c35af0f61c
144 Risk Score

Malware Insights

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

The sample is identified as malicious by ML classifiers and ClamAV, with heuristics indicating an advance-fee scam lure and the presence of an external URI. The document body, though partially corrupted, contains text related to 'Neet admit card link 2019', suggesting a phishing or social engineering pretext. The embedded URL points to a suspicious domain, likely serving as a download or redirection point for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://trafffi.ru/aws?utm_term=neet+admit+card++link+2019
    • https://cdn-cms.f-static.net/uploads/4368770/normal_5f8c9fec2c023.pdf
    • https://static.s123-cdn-static.com/uploads/4413110/normal_5fc4a962b054d.pdf
    • https://cdn-cms.f-static.net/uploads/4377400/normal_5f90f2772c0ae.pdf
    • https://cdn.sqhk.co/xetorexevapi/KgYjjic/ziwonatibopu.pdf
    • https://cdn-cms.f-static.net/uploads/4367286/normal_5f883815cb6a1.pdf
    • https://cdn.sqhk.co/gigemuji/TgevKia/animal_jam_codes_for_sapphires_2020_october.pdf
    • https://cdn-cms.f-static.net/uploads/4481990/normal_5fba423f19e68.pdf
    • https://cdn-cms.f-static.net/uploads/4474448/normal_5fd1a866cd466.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://s3.amazonaws.com/xapidajovaji/juxefoneme.pdf
    • https://uploads.strikinglycdn.com/files/5fa5d453-b1a3-4f12-9d01-e8aab6fc2859/scotland_national_anthem_words.pdf
    • https://s3.amazonaws.com/galinikagopit/cheb_khaled_songs.pdf
    • https://uploads.strikinglycdn.com/files/9a0a7b47-baa3-4b3e-ae90-814b989c31b0/71292516689.pdf
    • https://uploads.strikinglycdn.com/files/84853c71-7be9-45c6-82ac-2e21b641b720/zesokoxaxeniximigo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e46a.bin
00487337ba9a9058cdc4c5b892e70296a62c4fcf8c1c8cdfb8b24af0669d18ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE46A 5420 bytes
font_01_sfnt_off0000f6c6.bin
bfae4951e4dcb942c4fc98ca4ea62da96708873eeb8dc1f7c788ca4319d5350f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C6 7300 bytes
font_02_sfnt_off00010e6e.bin
7b0e51b8dd02f3cc7dec805e7048c2e891a26a80112859b02f033dbb3a967834		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E6E 11728 bytes
font_03_sfnt_off000135fb.bin
159427b32ed66bfbde86def5e6c2992bde67dfb25400c4000a37c9b59b949b61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x135FB 16140 bytes
font_04_sfnt_off00014b33.bin
0ff4873bf92c886d8465fcaa69c20bc06f85860aa5779750ab7171583f6da7bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14B33 3652 bytes

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