Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9de3c7157134d03…

MALICIOUS

PDF

68.6 KB Created: 2020-12-20 20:19:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 24ef545027afdd6862d6abdcea825d5b SHA-1: fc84f39f25be0a30a8ccb3bc263be2551fbc0fa2 SHA-256: e9de3c7157134d03d91697ba6e5260b35f13a68ede90d7e29685f983779d9b01
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics, including ClamAV and an ML classifier. It contains a large number of external links, characteristic of a link farm or phishing attempt, with a primary suspicious URL being trafffi.ru. The document body, though heavily obfuscated, contains text related to SQL queries and application metadata, suggesting a deceptive 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/aws?utm_term=select+date+from+sql+with+format PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372753/normal_5fc121f1e3707.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376362/normal_5f8fa9d61daa2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382771/normal_5fd1e8c8102ef.pdfIn PDF document text
    • https://pitadamep.weebly.com/uploads/1/3/4/8/134886808/4994353.pdfIn PDF document text
    • https://nafuxiba.weebly.com/uploads/1/3/4/0/134097784/musubodefotunawido.pdfIn PDF document text
    • https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/a5770c9f67c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367303/normal_5f9bb1ec72e54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415524/normal_5fb93d049ff7a.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/ff7d0248-56d5-458d-ab19-efe7da0f7250/fifa_16_android_apk_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/16687654370.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/canoscan_lide_210_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5372071-8a6b-48b6-9cdb-20779717dacd/womujararizuzise.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_off0000cc62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC62 5580 bytes
SHA-256: 1a42168c50b43cb34b7060750dd91e1745412ccb2ec0eb40f56ee4ad23905003
font_01_sfnt_off0000df44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF44 12104 bytes
SHA-256: cf1fa0f884bdef27b41517b19628361307af1b58190e55945425c607d4142510

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