Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0f4b1f0a934ee00…

MALICIOUS

PDF

77.8 KB Created: 2021-02-23 23:29:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 37fe53c0a8d7365812583dcb403728a2 SHA-1: dde60e12e414c890075a6731c307043d38908a4e SHA-256: d0f4b1f0a934ee005dfe40e3516094120fcf0f972a7131f823a31a341b056c0f
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It contains an embedded URL that directs users to a suspicious domain, likely to deliver a malicious payload or phish for credentials. No scripts were extracted, but the presence of an external URI and the overall detection suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/strik?utm_term=is+physics+the+study+of+forces+and+energy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412900/normal_600d0186b5379.pdfIn PDF document text
    • https://cdn.sqhk.co/siwemawatu/duhagdO/grocery_pallet_of_amazon_customer_returns.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367311/normal_6004cde192a70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484355/normal_602092e93856c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449009/normal_60011b15bce00.pdfIn PDF document text
    • https://cdn.sqhk.co/ronelejibir/7ihphj7/panda_pop_badboon_blitz_level_2_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/gdFhbic/maze_ransomware_ioc_2020.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/jevelel/fedejiziriwevi.pdfIn PDF document text
    • http://juwemijawikipo.epizy.com/free_medical_check_up_format.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/korenozeleg.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/house_lease_agreement_format_in_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/komemepakugadadu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5D 5424 bytes
SHA-256: 0c5047eb5eba1081d62c6b469fe92225181da7ed68eadfc2522634c7a18f4276
font_01_sfnt_off0000f1db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DB 10208 bytes
SHA-256: 394985ef22a340c5e4019972944663f803788a81c8ce31ea9c5bd90270fc5f31
font_02_sfnt_off000114d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114D7 16060 bytes
SHA-256: 9044de52cb519c95ee67ddce32ea384e940c5cdde4d4dd99e22aebcefe2ca402