Malicious PDF — malware analysis report

Static analysis result for SHA-256 edb473f1a0ff4da4…

MALICIOUS

PDF

70.9 KB Created: 2020-11-11 15:08:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a316a17b8e56809ee72e7c100e26662 SHA-1: 80103f2964b3b40535c77ab2e772fd0b21a9a083 SHA-256: edb473f1a0ff4da4151f9c2fcc36b1266de5e2ef242be98cc1146142ccee523d
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain. ML classification and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of a malicious URL suggests an attempt to redirect the user to a harmful site.

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://traffset.ru/123?utm_term=freud+and+neo+freudians+theory+of+personality
    • https://cdn-cms.f-static.net/uploads/4405194/normal_5f97b5d886525.pdf
    • https://cdn-cms.f-static.net/uploads/4454561/normal_5fa045adb851a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9577cfc0-7dcb-4abd-938f-fd2abb0b7c76/eberron_lightning_rail_map.pdf
    • https://s3.amazonaws.com/baposivarabuj/tujepojubotexubov.pdf
    • https://uploads.strikinglycdn.com/files/636f374a-19fb-47da-9c72-0443f64a13b7/mofurezupesegudavo.pdf
    • https://uploads.strikinglycdn.com/files/9b0d8bb7-8ab5-4c08-96f6-bc1aa935f250/82129621313.pdf
    • https://s3.amazonaws.com/wulagisi/ccc_computer_book_in_hindi.pdf
    • https://uploads.strikinglycdn.com/files/00604299-c44d-46a1-9413-65a8dd789ed4/a_whole_new_world_piano_sheet_music_beginner.pdf
    • https://uploads.strikinglycdn.com/files/263c2ccf-4750-46ed-87fb-118154889a76/kasonifuxo.pdf
    • https://s3.amazonaws.com/tadevewuju/molar_mass_of_magnesium_phosphate_mg3_po4_2.pdf
    • https://s3.amazonaws.com/rotowan/aap_bronchiolitis_guidelines_2016.pdf
    • https://s3.amazonaws.com/vuliwisuwig/67475461369.pdf
    • https://uploads.strikinglycdn.com/files/0f3af4ed-da1d-434a-88fc-75eff10ed0f9/losetij.pdf
    • https://s3.amazonaws.com/tixedujegibex/80100641882.pdf
    • https://uploads.strikinglycdn.com/files/e3f94262-3a90-44df-8bfd-653aeae52876/17923540028.pdf
    • https://s3.amazonaws.com/fadedosi/26835045668.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dad8.bin
c41722f3a0dd0f1e7024c1bde1a6fc24f4ad87cb71de164fa9e986b5c1aef1ae
pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD8 5184 bytes
font_01_sfnt_off0000ec84.bin
457e582f89d688a1c4a1e80d6c6023fd077e9a6c150653061661014fb3ea76f1
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC84 9840 bytes