Malicious PDF — malware analysis report

Static analysis result for SHA-256 2068773a8676feea…

MALICIOUS

PDF

69.8 KB Created: 2020-12-18 20:16:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: fcd59157e24ed18805b8ca0c9f8fa22f SHA-1: 0481664e937df46ad45108af9f6c5f24a60005b7 SHA-256: 2068773a8676feeab2eba1b5d743d35f8b67c9582df22f7c63dd980c80baf758
156 Risk Score

Malware Insights

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

The sample is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to host a malicious payload or redirect to a phishing site. The PDF structure and embedded content suggest an attempt to disguise malicious activity as a legitimate document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffine.ru/123?utm_term=massif+flight+suit+size+chart PDF link annotation
    • https://nivujetomut.weebly.com/uploads/1/3/4/7/134753784/9ff2a5.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://static1.squarespace.com/static/5fc7a8ee100abc42af3ec22a/t/5fd64bdc164d0f203c780078/1607879644705/86570521379.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edd8d3ab-41b6-463f-9190-dd0425707400/53730680757.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeea667c-d5d6-4665-828d-bc3be65c533d/satujavorenawuvako.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/guess_the_song_answers_level_1.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/lagidevipunakevadikizuka.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4c885ab79f442f2426dfb/t/5fcf05ab7379aa35976ebe43/1607402924156/vakot.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/vetosijiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34acea69-6e0f-48fd-a05d-70ceec8a8082/pterygoid_venous_plexus_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/55621652648.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc9d0d74326d1ed153c25b/t/5fdca1c9f31c0839905a604b/1608294858237/apple_app_icon_illustrator_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/jizowidagilolemexaxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25754850-0d7c-4629-932b-9d65021f8b0f/texas_hoa_resale_certificate_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dec40d08-6de2-4fa1-b338-45fc150d51d1/61849611906.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_off0000c606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC606 4864 bytes
SHA-256: ee4fca506f04d59d8bfed07fc44ad2b2e3ff551b12f920d6ba0f4eb4f5f554bc
font_01_sfnt_off0000d6b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B0 11552 bytes
SHA-256: 1d7d23aa6a2d7535839358a149a05a27d6d275c8c4df0a52a9882340c75f627d
font_02_sfnt_off0000fca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2