Malicious PDF — malware analysis report

Static analysis result for SHA-256 8683f8771beec9db…

MALICIOUS

PDF

126.1 KB Created: 2022-07-02 12:20:43 +00:00 Authoring application: yabhal (via PDF Master 1.0.1) First seen: 2022-07-15
MD5: 683a5fd67991d05d8fda163f47e9e710 SHA-1: c1d063629a7064f4021a5e8343a821f091ec4f07 SHA-256: 8683f8771beec9db054bcdac3a3d4bbb269bbc4d43db589c5a5a7ad28065fa5d
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which are advertised as cracked or pirated software. This indicates a lure to trick users into visiting malicious websites to download potentially harmful software. No scripts were extracted from this sample, but the presence of numerous external links suggests a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0068

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.
  • PDF link farm advertises cracked/pirated software medium PDF_CRACKED_SOFTWARE_LURE
    PDF contains many clickable links whose targets use cracked-software, keygen, serial-key, or warez vocabulary. These are SEO-spam lure documents that rank for software-piracy searches and route users to fake 'crack' download pages distributing potentially-unwanted programs, adware, or droppers. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://widesearchengine.com/brittish/rquez/ZG93bmxvYWR8YmI1Wm5Wd2EzeDhNVFkxTmpjeE1qTXdOWHg4TWpVM05IeDhLRTBwSUhKbFlXUXRZbXh2WnlCYlJtRnpkQ0JIUlU1ZA.S2V5c2hpYSBDb2xlLCBUaGUgV2F5IEl0IElzIGZ1bGwgYWxidW0gemlwS2V.corliss./proselytize PDF link annotation
    • https://ictlife.vn/upload/files/2022/07/seYfwbRHXsYngDdTUq8b_02_17743573b8cd60c76b5f5c694d389ea1_file.pdfIn PDF document text
    • http://www.expo15online.com/advert/encad-inc-117-51-driver-download-upd/In PDF document text
    • https://nelsonescobar.site/innoetics-tts-reader-keygen-__exclusive__-11/In PDF document text
    • http://escortguate.com/siemens-step7-v5-4-full-crack-verified-download/In PDF document text
    • https://miportalplus.com/wp-content/uploads/2022/07/epson_adjustment_program_l800rar.pdfIn PDF document text
    • https://favs.favelas.top/upload/files/2022/07/DZnPrgA3FaRzKHSisjRo_02_859a2fb3f75549dabb562b5f1d2a7ebd_file.pdfIn PDF document text
    • https://lisavinspires.com/wp-content/uploads/2022/07/Avtech_Player_Lite_Hj_Free_Download_TOP.pdfIn PDF document text
    • https://orbeeari.com/dance-of-death-du-lac-and-fey-update-v1-1-plaza/In PDF document text
    • https://ofsnl.nl/wp-content/uploads/2022/07/chuhali.pdfIn PDF document text
    • http://postbaku.info/?p=16553In PDF document text
    • https://www.pickupevent.com/wp-content/uploads/2022/07/Eurosoft_Pc_Check_701_Download_INSTALL.pdfIn PDF document text
    • http://www.bevispo.eu/wp-content/uploads/2022/07/garelm-1.pdfIn PDF document text
    • https://openaidmap.com/windows-xp-pro-sp2-vl-corporate-x64-june-2017-team-lil-download-best/In PDF document text
    • https://pantogo.org/wp-content/uploads/2022/07/vashart.pdfIn PDF document text
    • https://livefitstore.in/advert/audaces-v8-crack-extra-quality/In PDF document text
    • https://whatchats.com/upload/files/2022/07/nZaU8VmWOOcJVR7JFrFc_02_dfbb20057b740816d8ecb96478610a9c_file.pdfIn PDF document text
    • https://globaltechla.com/ultimate-hacker-v2-11-facebook-free-download/In PDF document text
    • https://www.verenigingvalouwe.nl/advert/ant-man-2015-720p-bluray-999mb-shaanig-link/In PDF document text
    • https://natsegal.com/wp-content/uploads/2022/07/halream.pdfIn PDF document text
    • http://dreamparents.org/?p=5458In PDF document text
    • http://www.tcpdf.orgIn 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/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002456.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2456 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off0000ac42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC42 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261