Malicious PDF — malware analysis report

Static analysis result for SHA-256 edafb696636446f9…

MALICIOUS

PDF

88.9 KB Created: 2021-03-15 19:35:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: d92864d03e8d493c0427e6771eee8373 SHA-1: 8f15a65fd057fed6679e83a7e1db5d024e83db07 SHA-256: edafb696636446f9c0ea2b4e13a3379b28b12000083acbed67ac03dbbf7ffe97
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically leading to a URL containing 'samsung+rs265tdrs+water+filter' and another to a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of numerous external links suggests a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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 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.
  • 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://xajibur.ru/strik?utm_term=samsung+rs265tdrs+water+filter PDF link annotation
    • http://numberoone.xyz/free_download_faded_alan_walker_mp3rwjps.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465908/normal_6004a54865c78.pdfIn PDF document text
    • http://show-visitor.xyz/39634766380d9cfz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426944/normal_6044335e3c2cc.pdfIn PDF document text
    • http://flowerport.market/what_did_stephen_hawking_achievep9idl.pdfIn PDF document text
    • https://cdn.sqhk.co/savadapo/gjhBJij/23442135905.pdfIn PDF document text
    • http://brumbum2.xyz/86346743971tezbm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405904/normal_602fe72535be8.pdfIn PDF document text
    • https://cdn.sqhk.co/jugemito/g4FKGhd/hachiko_movie_storyline.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375504/normal_60381f8b329e6.pdfIn PDF document text
    • http://instgramcopyrightdispute.com/gisepinawinenedagfpzl.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/xFifGij/46226840881.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375702/normal_5fe2e85c6627c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b0d9e7d-5a1d-49c4-9e3e-8d36f42fc3a9/libalapam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b3f9779-f3dd-4a37-a825-3b5e416fc786/how_do_i_fix_no_logon_servers_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/free_apps_jailbreak_ios_11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ace9dd0c-fe8e-4607-bd67-22d4954f96f2/2003_saturn_l200_repair_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6edb0f77-4dcb-485c-86e6-690390160a8f/bodyweight_exercises_for_back_fat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ff8b90e-e649-421e-a92b-d161361b953c/fobudibuxidu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcc7c252-9a47-4547-8d09-0e65a1a96591/where_did_mystic_river_take_place.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/25414742256.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06f7e606-5855-41e1-888a-c2102b5171fe/resea_del_libro_tu_puedes_sanar_tu_vida.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/brightness_driver_for_windows_7_ultimate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fa8ee71-2bd2-4a12-9f0b-6d978a8d9b70/how_to_get_rid_of_pimples_overnight_naturally.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/wildgame_innovations_camera_warranty.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2088ea69-cbe6-4d82-8b3b-2787354d3c4c/16980082153.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_off00011ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB3 5832 bytes
SHA-256: 385fe1274fe738e6b5be50428fd5a398be53e379bbe24f4e4342392b389910d6
font_01_sfnt_off00012e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E8A 11512 bytes
SHA-256: 795acd139cd64124420dd0cc6e0dbafd807a83aac09e6988fa5ebe0b565f1982