Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1f4818294808b2e…

MALICIOUS

PDF

75.7 KB Created: 2020-12-23 22:21:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 441685c887c8c36798c3347c44450e78 SHA-1: 11aeacb27d6a9b54ead805dd97f06f7f4be7e931 SHA-256: e1f4818294808b2ef7d751d5b84dfd986f17290430b2e83418df92dfca413cc5
156 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Playstation store cyber monday deals 2019' and includes numerous external links, indicating a link farm or phishing attempt. ClamAV and ML classifiers confirm its malicious nature, specifically flagging it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/strik?utm_term=playstation+store+cyber+monday+deals+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481411/normal_5fb75012b520c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366407/normal_5f87c79b39fa3.pdfIn PDF document text
    • https://dasifapuzo.weebly.com/uploads/1/3/1/4/131454731/5795625.pdfIn PDF document text
    • https://loputoporebile.weebly.com/uploads/1/3/4/8/134847610/mifigol.pdfIn PDF document text
    • https://bamukafigozoxin.weebly.com/uploads/1/3/4/8/134861202/sigojiperoreta-kepuxuzesopog-pajumigewo-fajugokiwi.pdfIn PDF document text
    • https://dapadode.weebly.com/uploads/1/3/4/6/134646205/d8a2c28e115.pdfIn PDF document text
    • https://pagununida.weebly.com/uploads/1/3/4/8/134861868/vunexitamorigi.pdfIn PDF document text
    • https://latenenagizogip.weebly.com/uploads/1/3/2/6/132696064/finorudikanipopogen.pdfIn PDF document text
    • 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/vovabagubajegeb/dessert_recipes_using_filo_pastry_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/exponents_rules_practice_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f1c1c77-87ae-4bb6-8b90-9848b438cb56/galamodewewabifixi.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/poxeku.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/motor_vehicle_inspection_report_sample.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92f2cf2e-af6d-4f99-9e8b-49fccaff3341/57782352555.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_off0000d896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD896 5596 bytes
SHA-256: 27416314c332f7b0136cbd3bda7a0af99e46680258c9c96be406c40a42721067
font_01_sfnt_off0000eb7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB7F 11848 bytes
SHA-256: dcd9236379d289623f05d48788fff46db81a30a3a2e50fc898096d7a617e9cea
font_02_sfnt_off000113f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113F8 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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