Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcf4fe38ce70c614…

MALICIOUS

PDF

73.0 KB Created: 2021-03-01 18:21:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7cfc057cff3563939a461f7a8120fc1e SHA-1: 986c6a9d0b19b5af706a4b61ad84f80feb17d287 SHA-256: bcf4fe38ce70c614061e4e0c15b1081413188faca38384b5c599ae117a6c7983
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://mezovuduw.ru/award?keyword=how+to+connect+sony+soundbar+and+subwoofer+to+tv PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370560/normal_5ffddd3dd694c.pdfIn PDF document text
    • https://cdn.sqhk.co/zuronenom/6m2uihB/tumopopafil.pdfIn PDF document text
    • https://cdn.sqhk.co/zejejofe/ijajige/89877651082.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446289/normal_60381d7644d2e.pdfIn PDF document text
    • http://tehnotop.store/304251440198iqik.pdfIn PDF document text
    • https://cdn.sqhk.co/sepunaro/i3gg2si/sowogelupurulofiked.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420587/normal_5fe213d69f8c0.pdfIn PDF document text
    • https://cdn.sqhk.co/lokiwejawe/aUfLnjd/gavsv_job_forum.pdfIn PDF document text
    • http://tipenedebila.22web.org/zamaror.pdfIn PDF document text
    • http://bu-markett.com/piniviwiriwulisonimolaliearyk.pdfIn PDF document text
    • http://the-job.ru/greek_mythology_worksheets_middle_schools53dc.pdfIn PDF document text
    • http://tdsevsvet.ru/in_shirley_jacksons_story_the_lottery_is_held_each_year_and_it_is_led_bysm4a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371553/normal_5ff5ee87a311a.pdfIn PDF document text
    • http://helpforteam.com/fobekutogenarifurabepegijjaqp0.pdfIn PDF document text
    • http://maska-respirator.com/863304102962zfk5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366366/normal_5fc65c61263d8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fopagozijudiri.epizy.com/fumitelefomemetudowis.pdfIn PDF document text
    • http://buposewalesuz.rf.gd/basic_instinct_2_tamil_dubbed_movie.pdfIn PDF document text
    • http://sidovarodefomi.rf.gd/49022592260.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_off0000def6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF6 5340 bytes
SHA-256: 3ed7fd1873f1e77c7eb8cba24a7aac2eab799caa0ec73ee3583eba852dea9077
font_01_sfnt_off0000f146.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF146 10628 bytes
SHA-256: 89a6c934f291c37343a7ba334bfb114bb4aa5cfb885c36922c97ca563dcc8908