Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2cc3b68006f4aa3…

MALICIOUS

PDF

61.1 KB Created: 2020-10-27 21:28:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 13e4d75e4bc60f57a555560b1eedb042 SHA-1: 170f802323685a10cd5f38b07993b7b6154968d7 SHA-256: d2cc3b68006f4aa3919cf2070dc27ce7672b723aa802404919993c7e3117875d
154 Risk Score

Malware Insights

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

The PDF contains a link farm with 22 external PDF links, including a critical redirector link to 'gettraff.ru'. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the structure and embedded URLs suggest a malicious document designed to redirect users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?keyword=a+chord+piano+inversions In PDF document text
    • https://nakumupapetiz.weebly.com/uploads/1/3/2/7/132741615/juwitapaloxofipidaxu.pdfIn PDF document text
    • https://vabofofed.weebly.com/uploads/1/3/4/3/134337048/sozoxiponiku-duxigagakudaxor-doweke.pdfIn PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/7536211.pdfIn PDF document text
    • https://tanifovekula.weebly.com/uploads/1/3/1/3/131379991/gemoze-xiwonofulig-rajaravoni.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/bakutixaw-xegoloxem.pdfIn PDF document text
    • https://nudopimiga.weebly.com/uploads/1/3/1/0/131070212/8339731.pdfIn PDF document text
    • https://xazojitov.weebly.com/uploads/1/3/1/4/131408465/2823216.pdfIn PDF document text
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/c4001091001fb9.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/154782.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/guvovigo/articles_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/waviwa.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/financial_accounting_and_management_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/wavelet_analysis_matlab.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/saxesanoferogozepibevufod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4ab94d8-d7dc-4d5a-97e1-e4c2a91d73c3/a_concise_guide_to_technical_communication_3rd_edition_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88be813b-a983-4083-8ef8-7c4447edb1e1/mac_10_middle_school.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/new_mercedes_a_class_brochure_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/mastering_bitcoin_download_free.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/77977254783.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/41435338212.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87e66b22-505f-4181-ab3a-7ff7708dec46/tuligetax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c89caf59-f761-442a-8a81-313ace6e3148/78061886434.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000099dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99DC 5180 bytes
SHA-256: d5f65e03d8db86d0040c1ae02828dab08671da1e478b95892d3a8323cdf94685
font_01_sfnt_off0000ab6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB6F 11240 bytes
SHA-256: 3494729c32c5740ee19937f3a731f2453a86f0417dc6b91b97c5880c2b5c0543
font_02_sfnt_off0000d1d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D0 16120 bytes
SHA-256: fb7b45e24c28c4473d0ca1c6410c593992d9a809009f9c41b5ae32c9142507dd

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