Malicious PDF — malware analysis report

Static analysis result for SHA-256 aadd68e1faba4b75…

MALICIOUS

PDF

71.3 KB Created: 2021-01-11 15:07:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4d1b058b37adcb578c734d5a58c99cff SHA-1: 80a4f1cfad8e0d4265dfc741cbe54e0f1d9a6e97 SHA-256: aadd68e1faba4b75cd44625c6655ea810497a68a4ffc52ac38d5dfeb9deeae03
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and 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 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://trafffi.ru/123?utm_term=grade+8+geometry+angles+worksheets+pdf PDF link annotation
    • https://zejuvuvegodefi.weebly.com/uploads/1/3/1/4/131453892/9801224.pdfIn PDF document text
    • https://site-1177226.mozfiles.com/files/1177226/scoreboard_hockey_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/desiruzag/DQgiehc/blue_red_gamefowl.pdfIn PDF document text
    • https://likizosuzi.weebly.com/uploads/1/3/4/8/134886942/lorepasatevege.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/lapubepirutivak-tovavesuvusu.pdfIn PDF document text
    • https://site-1172371.mozfiles.com/files/1172371/sukosafixapuzaguku.pdfIn PDF document text
    • https://setekonireza.weebly.com/uploads/1/3/4/1/134131298/tigen-bunupon-kenupobelopo.pdfIn PDF document text
    • https://pakosikan.weebly.com/uploads/1/3/0/7/130740558/gukilokasezowunoxeb.pdfIn PDF document text
    • https://pewatusikowago.weebly.com/uploads/1/3/2/6/132683224/nunanatosomekito.pdfIn PDF document text
    • https://vovikadu.weebly.com/uploads/1/3/4/5/134587732/02a1c9d0ef.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/xuxifuzituwu/induction_motor_control_design.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/second_law_of_thermodynamics_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/slow_is_smooth_smooth_is_fast_quote.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/82077607161.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_off0000d7ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7AB 5940 bytes
SHA-256: eed157a2e723b6c1d7ffaf8fc802ed259aadfad77753cf119e5c2aafff7905a5
font_01_sfnt_off0000ebd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD6 10600 bytes
SHA-256: 3a34c25dafb8c812adbcd286f90879f6703f06ce7e9025f0dd5e91c67679ee17

Open this report in the interactive analyzer, or submit your own file for analysis.