Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe28715f339f4eff…

MALICIOUS

PDF

78.5 KB Created: 2021-02-08 22:59:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 89d09225114a656dfd9f6a5f1fb9d77a SHA-1: 8154035ed69429d80a463528e94f78bb28e9b65e SHA-256: fe28715f339f4eff4b284c8927dafb0ed10136c9b212575e93b94c57a8e3ae4e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wb?keyword=u%20s%20p%20a%20ka%20full%20form PDF link annotation
    • https://cdn.sqhk.co/gupimupiset/jeicthc/bawuminafuti.pdfIn PDF document text
    • http://juzajikadig.22web.org/weather_report_blythe_california.pdfIn PDF document text
    • https://cdn.sqhk.co/nilimijano/ghCGH9G/crossword_puzzle_maker_edhelper.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/qhbgPDa/frida_ios_class_dump.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449996/normal_5ff2be6a72ecb.pdfIn PDF document text
    • https://cdn.sqhk.co/kabevapixox/fhjghhd/disosezusax.pdfIn PDF document text
    • https://cdn.sqhk.co/retobumoki/Jjdjthb/happy_glass_free_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/setewefasari/ge2ghtU/frankenstein_s_monster_little_alchemy_2.pdfIn PDF document text
    • https://cdn.sqhk.co/nowovadizeb/05iiejc/car_toons_magazine_t_shirt.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/febopa/blue_piston_bluetooth_speaker_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/10591706253.pdfIn PDF document text
    • http://riwexakax.epizy.com/95285187404.pdfIn PDF document text
    • http://zalowakudedakov.rf.gd/aigetoa_membership_form.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/fojizizutok.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/socialismo_definicion.pdfIn PDF document text
    • http://temomij.epizy.com/familiar_guide_bit_heroes.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/magnum_pi_season_2_episode_guide.pdfIn PDF document text
    • http://gadusevi.rf.gd/anyway_you_can_annette_bosworth.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_off0000f7e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E7 5104 bytes
SHA-256: 8de5baf1053e026f8967d0da6aa601bfe8bff7c3d22fe48fa5310c92a006f5fc
font_01_sfnt_off00010936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10936 10468 bytes
SHA-256: 20ac96664be30ff8435cf725fb1480821e3bde743b5803fe73d22cd1327e612a