Malicious PDF — malware analysis report

Static analysis result for SHA-256 662c646f20a70de1…

MALICIOUS

PDF

73.3 KB Created: 2021-02-22 16:41:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1c2414cc46b11587acfedc44bce4c945 SHA-1: 0ef43bb635fea851b30ac033fc2b5519fcfe3195 SHA-256: 662c646f20a70de14183f92cb2d0ef70e39dfabf28bc1fb378d0b7821e05cda7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/wix?keyword=brooklyn+college+academy+graduation+2020 PDF link annotation
    • https://doliwejivus.weebly.com/uploads/1/3/4/3/134353379/nafabuput.pdfIn PDF document text
    • https://cdn.sqhk.co/letojeka/2heKMhc/labyrinth_game_ravensburger.pdfIn PDF document text
    • http://help-bluebadgecustomer.com/lereboruzovasasoboselowebg5ru4.pdfIn PDF document text
    • http://boxberry-24.cc/codycross_seasons_group_76_answersxx3dt.pdfIn PDF document text
    • https://cdn.sqhk.co/fazologim/gjgdhhb/football_uefa_champions_league_2020_live.pdfIn PDF document text
    • https://zowukudikumo.weebly.com/uploads/1/3/1/3/131382828/e4905f71b0c1.pdfIn PDF document text
    • https://bowodazuludov.weebly.com/uploads/1/3/4/7/134700376/fetaguji.pdfIn PDF document text
    • http://kukushpa.fun/1426109410467d17.pdfIn PDF document text
    • https://pojirada.weebly.com/uploads/1/3/2/7/132741169/2969201.pdfIn PDF document text
    • https://cdn.sqhk.co/dikozogub/XjhPmgg/bigo_live_login_with_facebook.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/ravuxudibure/jugosojajepawiri.pdfIn PDF document text
    • http://todosix.epizy.com/nawawafirokelupusuku.pdfIn PDF document text
    • http://niwidek.epizy.com/chalte_chalte_movie_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/shakira_la_tortura_free.pdfIn PDF document text
    • http://dolifusekaxug.epizy.com/73334628591.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_off0000e1e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E0 5568 bytes
SHA-256: b52f85c0a9312526e520912269e69dc0ccbd338f7632dbd63311b6f5554fb985
font_01_sfnt_off0000f4cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CD 10344 bytes
SHA-256: 56ab3f5aab4b889da1373b5a0eb602f0b97abf31aec72ea7b6b2e966d798b6dd