Malicious PDF — malware analysis report

Static analysis result for SHA-256 0666c4f5b3d79a24…

MALICIOUS

PDF

65.9 KB Created: 2021-02-23 11:38:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cbd052901dc995005a9bdc70f3addce7 SHA-1: b4f0ba4690f741facd2d8b458dbb688820bc3690 SHA-256: 0666c4f5b3d79a24278b40f1e9031a60db66b73c9710c7fb43008c25aed9936f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=waves+practice+worksheet+20.1 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366381/normal_6028160e7344c.pdfIn PDF document text
    • http://momsmall.space/arbeitszeugnis_schlussformel_zwischenzeugnis4fbck.pdfIn PDF document text
    • http://malemukinupogeb.22web.org/brave_browser_android_source_code.pdfIn PDF document text
    • http://siondez.ru/67843089712jl5t3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380883/normal_600602a99a266.pdfIn PDF document text
    • http://meinekarten.best/possessive_adjectives_long_form_spanish_worksheet_answers007m3.pdfIn PDF document text
    • http://yesnutural.space/whistleblower_act_malaysiai3pgy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407782/normal_6026d08d1ce38.pdfIn PDF document text
    • http://zipekapivan.22web.org/calculus_3_exam_1.pdfIn PDF document text
    • http://neuroncraft.online/rectangular_coordinates_worksheetavl8f.pdfIn PDF document text
    • http://detonicinitalia.website/xepikijomefesatikib0bo77.pdfIn PDF document text
    • http://kkkirrreeee.space/xunezubidozaligugifabw2wif.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
    • http://punirasum.rf.gd/automotive_mechanics_salary_guide.pdfIn PDF document text
    • http://laguzovola.rf.gd/bike_race_game_apk_file.pdfIn PDF document text
    • http://bamasagure.epizy.com/34875983147.pdfIn PDF document text
    • http://luwatejanif.epizy.com/toyota_corolla_2016_specs_australia.pdfIn PDF document text
    • http://xasazotim.rf.gd/kvie_program_guide.pdfIn PDF document text
    • http://watijosanowo.epizy.com/seregugujarefixujagedof.pdfIn PDF document text
    • http://lugavatakavupo.rf.gd/26917083044.pdfIn PDF document text
    • http://lenadupubop.rf.gd/41248429175.pdfIn PDF document text
    • http://nufewaruxemo.epizy.com/belahan_jiwa_kahitna.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_off0000ba85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA85 5260 bytes
SHA-256: 2362d4a22d3b599b9a066fd974ae10cb622af703b65339919e33c36edbec2eac
font_01_sfnt_off0000cc9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC9C 9260 bytes
SHA-256: 04539d3c11c647f5d1ba24399e0b76bf78c73f2f3c6d12e3ea858f828a8c1d2f
font_02_sfnt_off0000ec31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC31 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176