Malicious PDF — malware analysis report

Static analysis result for SHA-256 01c436cfe5e3550c…

MALICIOUS

PDF

66.9 KB Created: 2020-12-14 10:40:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 74f4533c857f8510c2bbed18b2f34529 SHA-1: 921017d917db5b95ed6655297f542c237ce8dd44 SHA-256: 01c436cfe5e3550cb02e9516e0404254ee62fcd5bef0cd0e3450f460467380b2
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 0.9998

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/strik?utm_term=antigone+character+chart+worksheet+answers PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/490a8681-d8aa-4a0e-bea2-a8f3874cb147/reposudowujepiviberoka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/585bab48-661b-4c53-a8cf-9ee665bf9ea7/fimalomesewax.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/terri_jones_csn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1881a401-c2cf-45ce-b3dc-530bb048281c/wujite.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/whatsapp_karna_hai_mujhe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc53a0ec89e1c4b8fdafd1e/t/5fcd8fc77ae85b53b2ab56fb/1607307214430/paralyzed_right_diaphragm_treatment.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef09e26d-1b4f-4271-80aa-1b780f7e60e3/48413241399.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df4fa154-bd8c-4127-a9f1-e5d36d159a93/66435047546.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/jusunuregusize.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5338ef17-1c8f-434f-9caa-dab2ddf0177e/nodadomesepur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84fedb9c-c5e8-43c3-8cac-4c55f0aabc5d/izmir_travel_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf0db9cb3b830a1a314b27/t/5fd01c111c49363a9b3e944e/1607474193693/caption_property_access.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/osmosis_potato_lab_conclusion.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC56 5176 bytes
SHA-256: 346486f0577ae3ae43cc39eb7b7bb59979a8f6652605c8067c501ef15049d037
font_01_sfnt_off0000de03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE03 9488 bytes
SHA-256: 51aa50af9026eb3fbfc04acb3a8b1cc0b9f5330f9efa0adb71348988b2c54b70