Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf5b2e6db0de08da…

MALICIOUS

PDF

97.7 KB Created: 2020-11-11 18:41:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d7231071d7baab800bfad5ba509365ac SHA-1: 295e6447bf2512c9511e4f414bb813392362b2e3 SHA-256: cf5b2e6db0de08daf4c3683689ec2e48aaf76b91c78dbbd19e1efac530a41027
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 0.9992

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://trafffi.ru/strik?utm_term=manual+apa+2019+ucv PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/punurum/luvesidumofoxukuzax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d130cde3-74c2-4a4d-b990-e5340e61bf80/dangerously_in_love_album_zip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/719e2b5a-a294-4651-9c3a-e9dc3238d1bc/26111060187.pdfIn PDF document text
    • https://s3.amazonaws.com/fulomufimikim/vunotodelorogi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3b0999c-f8d0-43dd-9209-1b973c006365/89122420101.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7b7f1c9-53bd-4d7b-8dd1-d2db6a835971/5632948379.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc7f7e1f-0d9c-49fa-ad69-887c49cc882f/78519292149.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/gokoribazabitiro.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/saint_mary_lake_montana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93bcb6b5-2d03-4d35-9639-82c77af981f7/how_to_use_f4se_with_nexus_mod_manager.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_off000132f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132F7 4728 bytes
SHA-256: 72b815a04c5ac893b464428b60acea79063c5f544ce4166ee1039184f17d476d
font_01_sfnt_off00014318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14318 12836 bytes
SHA-256: 86e791a10c49069f18864fd0b4d2564543db82b69b0186ad51ec03bb85bd856e
font_02_sfnt_off00016c18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C18 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3