Malicious PDF — malware analysis report

Static analysis result for SHA-256 72523c59d4d0ea7f…

MALICIOUS

PDF

73.0 KB Created: 2021-03-01 00:35:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b885417f90e49b758e412b958b7b2fac SHA-1: be10466f979edf63c0e7233854b1c39bba6b4a41 SHA-256: 72523c59d4d0ea7f43c3f3ec09643b03760cd0cbd3c9ea8a8cdd4d4f7b9f6c6d
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://gimoguvi.ru/award?keyword=burger+king+dec+2020+promotion PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4457332/normal_6004b314d097d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476010/normal_60297f5d52b4b.pdfIn PDF document text
    • http://bagerisevi.scienceontheweb.net/philips_universal_remote_apple_tv.pdfIn PDF document text
    • http://balifruit.com/319184802027a62m.pdfIn PDF document text
    • http://tugrull.com/51963313682dei9l.pdfIn PDF document text
    • http://salet.store/formuler_z8_android_7.0_iptv_set_top_box8gk5i.pdfIn PDF document text
    • http://gajaxujifusokul.mygamesonline.org/indian_veg_sabji_recipe_in_hindi.pdfIn PDF document text
    • http://stebsmeh.space/967306922811lzr4.pdfIn PDF document text
    • http://item-mask.top/agreeing_and_disagreeing_phrasesryjgx.pdfIn PDF document text
    • http://salea.site/6_former_boroughs_of_torontovin0o.pdfIn PDF document text
    • http://esportzmlevent.com/megigeker89wxp.pdfIn PDF document text
    • http://propovar.ru/499375000317urdc.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/fekazudabo/70160128602.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/6933031219.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/nuzasinageneja.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_off0000cf2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF2A 5360 bytes
SHA-256: 1f894c477b18e643d43140fe451c0bbe2692ac4f55c667fe6d78b09553cd52cf
font_01_sfnt_off0000e158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE158 4352 bytes
SHA-256: 3e7be70e6dcb3f6319f52953f18593eab9eb1555067f44dd90a3c89b3efe0ab5
font_02_sfnt_off0000f1ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AE 10228 bytes
SHA-256: 46028dbcc13cb60cc79605560e21b7d0e3f5087e763f9f51f609cb9f28dc3818