Malicious PDF — malware analysis report

Static analysis result for SHA-256 62da7df0e27e82cd…

MALICIOUS

PDF

47.3 KB Created: 2020-11-09 11:07:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fc29e55922d92045b0af9ae08b2f45ed SHA-1: 97af6fa5d5b548ad583ed49fa53cd7ddc22fad53 SHA-256: 62da7df0e27e82cdbd0530b12be23529d805b2328ee9ed3640960e6c33fda6fe
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffset.ru/aws?keyword=fitbit+charge+2+hr+manual PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/fowujesexazilowotim.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/jifudokek.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/topake.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17bfa0a7-a967-4b49-9c32-d9a50b95082f/90208362851.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/79348778180.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/1192658416.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d51f7d1-b4c2-4fcd-802a-cf9d039860f6/jurassic_park_screenplay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5e5c09f-c3bd-4008-959c-8a1b01bc5fd0/tamuwekuxonotad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d232b198-d114-42af-870f-d273de2bef4c/cloverton_a_hallelujah_christmas_sheet_music.pdfIn PDF document text
    • https://dagirivemaj.files.wordpress.com/2020/11/body_shred_calendar.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/chandrayaan_2_full_information.pdfIn PDF document text
    • https://s3.amazonaws.com/kamigovitakiril/69332331585.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32e4f94f-6615-4905-91ea-58549764e0d0/tezejemebigopevova.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_off00007b26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B26 5260 bytes
SHA-256: e6c91945435848dfdf268567f03b873603e86ce8538183bdc8348b4063d6fe01
font_01_sfnt_off00008ce6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE6 10364 bytes
SHA-256: 7e453eeb15b851686ff2238d562bc3b4046ed00fe54a5609de75a3891e3dcc5f