Malicious PDF — malware analysis report

Static analysis result for SHA-256 396036501c333480…

MALICIOUS

PDF

72.8 KB Created: 2020-12-23 00:06:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 1eec1fe07b5948d3e8873b1f468d9db8 SHA-1: 1036c54ef6599a74673e267c24a0c401581a3707 SHA-256: 396036501c33348089b74728b3c193d028626d2fa62ad5bbf072ffb711f19873
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a link farm. One of the primary external URLs, 'https://trafffi.ru/strik?utm_term=petroliana+auctions+2020', is suspicious and likely part of a phishing or malware distribution scheme. ClamAV detection as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0' further supports its malicious nature. The document body, though heavily obfuscated, contains text related to 'Petroliana auctions 2020', suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=petroliana+auctions+2020 PDF link annotation
    • https://piriwunetu.weebly.com/uploads/1/3/1/3/131379541/ea34828d6ca6180.pdfIn PDF document text
    • https://jalekusurasi.weebly.com/uploads/1/3/4/3/134392531/xivubaralon_folilufatutal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459188/normal_5faf6e3aaedbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462093/normal_5fb5a535b49da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368250/normal_5fa3c5c0249e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495271/normal_5fe027561406c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7d825fc-ebed-4b75-b710-3ffee7a9ec5e/medieval_total_war_2_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f37228bb-e26c-4253-a84e-d4ab0748536d/normans_and_saxons_battle_of_hastings.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/72551354211.pdfIn PDF document text
    • https://s3.amazonaws.com/vopadofugon/long_words_with_no_repeated_letters.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/97378185012.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95ea5d4c-c47a-4704-b953-c4ddbd4e7db0/fepiniwi.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/46418174085.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/69692318915.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_off0000e18a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18A 5068 bytes
SHA-256: 9529c40b05e21198d4ca9c6d8350280f2dd4bea49d568f344cf77e60ed4e47e8
font_01_sfnt_off0000f2ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CA 10444 bytes
SHA-256: 8f1dddefdd6750c445eb080d55a1f058c5ca6c9621af2d1dfeab4e93c6830141

Open this report in the interactive analyzer, or submit your own file for analysis.