Malicious PDF — malware analysis report

Static analysis result for SHA-256 7343dc096baa20ee…

MALICIOUS

PDF

37.4 KB Created: 2020-11-08 21:53:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: a525f2127752d00716b95acd7f4d8289 SHA-1: 2117e180ed8e3ea4b67f712ebf2c5eccacad9868 SHA-256: 7343dc096baa20eecd2a8bdf7cb8815f800357522aafe54d1317c309a6a3d814
96 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 'PDF_SEO_LINK_FARM'. One of the primary links, 'https://trafffe.ru/123?keyword=forsyth+county+property+tax+search+georgia', suggests a potential SEO manipulation or phishing attempt. While no scripts were explicitly extracted, the presence of many external links and the ML classifier's high confidence indicate malicious intent, likely to redirect users to malicious sites or for link farming.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafffe.ru/123?keyword=forsyth+county+property+tax+search+georgia PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387420/normal_5f954a226f2c8.pdfIn PDF document text
    • https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/bisafexesel.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/potamotaz/usb_loader_wii_games_download.pdfIn PDF document text
    • https://s3.amazonaws.com/bunobu/juan_camilo_castillo_andrade.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/poptropica_carrot_island_walkthrough.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/endless_frontier_airship.pdfIn PDF document text
    • https://mivepir.files.wordpress.com/2020/11/the_cask_of_amontillado_questions_an.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/char-broil_patio_bistro_electric_240_reviews.pdfIn PDF document text
    • https://pejixukadege.files.wordpress.com/2020/11/87814475508.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/29024218957.pdfIn PDF document text
    • https://puxefeko.files.wordpress.com/2020/11/advocacy_and_opposition_7th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/descriptive_method_of_data_analysis.pdfIn PDF document text
    • https://rarokazuj.files.wordpress.com/2020/11/45699057225.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/my_left_foot_christy_brown.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_off000053e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53E3 5288 bytes
SHA-256: cd387333635e89c2c5f7cb81e8de01cb61d33178ecccfd17ff2cbe4ad2075529
font_01_sfnt_off000065ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EE 10264 bytes
SHA-256: 4ef9251e84a8ad0d066c5c238e5a02cecedeae567d1348638c7d29da2e736e35

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