Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5e5f6ecbdea460b…

MALICIOUS

PDF

72.9 KB Created: 2021-02-15 17:04:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 20845f89605e60474398140da0d39997 SHA-1: 48d8975819a508941932c21e9327523d2d861d41 SHA-256: f5e5f6ecbdea460b0a2d68023fc3634e181f0d603c2f63254207c84956c7df66
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yafferge.ru/aws?utm_term=what+are+intellectuals+good+for In PDF document text
    • http://remont-kholodilnikov.website/wargames_flags_15mmcza9e.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/dhgbgdV/truck_driver_free_game_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369794/normal_6016ed7476efc.pdfIn PDF document text
    • https://mapokelamoda.weebly.com/uploads/1/3/1/8/131856574/9673803.pdfIn PDF document text
    • https://pewatusikowago.weebly.com/uploads/1/3/2/6/132683224/womijixabetut_wogopud_vabuwadataxotel_moreke.pdfIn PDF document text
    • https://cdn.sqhk.co/dovawowo/hjhidY7/wits_mining_engineering_short_courses.pdfIn PDF document text
    • https://vijapuloxo.weebly.com/uploads/1/3/0/7/130775263/7e4ef.pdfIn PDF document text
    • https://cdn.sqhk.co/lofakekaf/hgiib3u/join_clash_3d_craft_runs.pdfIn PDF document text
    • https://rebazizezasij.weebly.com/uploads/1/3/4/5/134586802/bezemif.pdfIn PDF document text
    • http://damodudajipofem.22web.org/jufofov.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/wupixufekijax/5611564460.pdfIn PDF document text
    • http://detuzepa.rf.gd/beginner_piano_sheet_music_free_printable.pdfIn PDF document text
    • http://tisoparumunezud.epizy.com/report_homing_pigeon_found.pdfIn PDF document text
    • http://fofeparulofiz.rf.gd/centricity_practice_solution_12_manual.pdfIn PDF document text
    • http://mujujum.epizy.com/abcd_2_movie_3gp_video_song.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_off0000e035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE035 5296 bytes
SHA-256: 964c6564ba42d9850527b99fca8b4ef51e9d02d7c5a1ce1dd120bdc2b47080b1
font_01_sfnt_off0000f240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF240 10756 bytes
SHA-256: 015bbcd7ca9dd715e1d002c66bc4cd8957be346201af656075a9332deda2476f