Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb2f594502cc114d…

MALICIOUS

PDF

82.4 KB Created: 2021-03-25 04:27:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 79ddc6c2685a0601970cb0efe0642138 SHA-1: cefa10a0a5d21f17749c35b6fea03f6a9ba05cbe SHA-256: cb2f594502cc114de6d2c4afd049b8017b558ebc91b8382bd5841129acd7b4a1
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with the primary one being `https://lozipotod.ru/wb?keyword=maze%20runner%20death%20cure%20ending%20scene`, suggesting a lure to a malicious website. The PDF's structure and embedded links are characteristic of a link farm used to distribute malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://lozipotod.ru/wb?keyword=maze%20runner%20death%20cure%20ending%20scene PDF link annotation
    • http://1cats.space/ap_us_history_projects7rzo3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460688/normal_5feb8840c2e56.pdfIn PDF document text
    • https://jidedenevunuva.weebly.com/uploads/1/3/4/4/134498736/ec2805.pdfIn PDF document text
    • http://bizowokare.getenjoyment.net/sisezigutatetutokumal.pdfIn PDF document text
    • https://pisixaxonazav.weebly.com/uploads/1/3/5/3/135394173/lipugolu_luzujinawinolos_piverelux.pdfIn PDF document text
    • http://taxevidel.medianewsonline.com/bush_francis_catatonia_scale.pdfIn PDF document text
    • https://tinuxitimo.weebly.com/uploads/1/3/4/7/134748051/bedarumemikudojowas.pdfIn PDF document text
    • http://pifedalune.medianewsonline.com/67632276159.pdfIn PDF document text
    • http://kemedejovon.getenjoyment.net/51081073443.pdfIn PDF document text
    • https://moxuwurenawa.weebly.com/uploads/1/3/0/8/130874588/zufimivogoke_suwiraz_punitoxamo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489045/normal_601d34e81e3c2.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/22388883263.pdfIn PDF document text
    • https://gukabezifom.weebly.com/uploads/1/3/6/0/136051166/jisud_zadovelezenegon_dusepusomorepa_tepupojiveg.pdfIn PDF document text
    • http://cocobuka3.xyz/knights_of_pen_and_paper_2_crafting_guidesooe2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418991/normal_601273c902367.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/timeziso/65872226112.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/pozovimelez.pdfIn PDF document text
    • http://kadoxosin.atwebpages.com/how_many_lego_harry_potter_advent_calendars_are_there.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/sepisug.pdfIn PDF document text
    • http://zutaturusix.myartsonline.com/zesugoge.pdfIn PDF document text
    • http://lugimeviguv.myartsonline.com/pdf_to_ms_word_converter_for_pc_free_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F1 4996 bytes
SHA-256: 23e557e2550590562038e30f383366fb8336740519d7399f9948da3511f6d9fd
font_01_sfnt_off000109eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109EB 10528 bytes
SHA-256: c4992a6b894496d6d2b1f4a3b4b9832978ca462fc016917cdb2ee25e31edc9bf
font_02_sfnt_off00012e02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E02 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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