Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e33a86a00e9984a…

MALICIOUS

PDF

75.8 KB Created: 2020-12-05 11:02:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: cfd5f2daa0bc07ddccc6381678a5cb5a SHA-1: df4b7365f7f3d55f00371e6a24ee21f0078fe260 SHA-256: 1e33a86a00e9984a0fcf4d3e78c2604fd80f3b5a4412a84aad2575e722fd82e1
96 Risk Score

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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/aws?utm_term=loch+awe+fishing+reports+2017 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419633/normal_5f99d6f46d287.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/visagogijulep/ramadan_2020_calendar_starts_april.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfab0b9c-7596-4317-891d-d27670f758aa/pijoxona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46dddb47-3e05-4372-8ad7-4b03de525192/gexowozikewibo.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/cool_reader_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/datasheet_nodemcu_lolin_v3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f1ae9e9-2cdc-4012-b47a-739cecea650f/24467588399.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/89351493943.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/430ecb3d-aede-4e50-a8dc-5760758f7cfb/how_big_do_corn_snakes_get_in_feet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fca1db02-1bad-41ea-b14e-fd030610f518/calcul_mental_complment__100_cm2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71e7c1c8-9d67-477b-980e-08b7f6ef63e1/zonujenekeji.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF39 2968 bytes
SHA-256: 771033003054101e9e87eceebec65dd17fac76109d4f476580acb9549e794e17
font_01_sfnt_off0000e9df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DF 5684 bytes
SHA-256: 352dade37306db76ca407d653853b7a02547f1d3347175365d2c063a2d4cff77
font_02_sfnt_off0000fd64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD64 11000 bytes
SHA-256: 585fdfc054653d8543ddbb4eb15a091b83219798ac3bfe445f883a7a82386767