Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b153a2f9021b5f5…

MALICIOUS

PDF

71.8 KB Created: 2021-02-27 07:10:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c7dc22513012954ee26a6ca2b9d6a14e SHA-1: b2ca056a1a5c12c34603ae52b32d43615507bdd0 SHA-256: 3b153a2f9021b5f59227a53f3516a976f66c9b4e18cbf2cbcad225ecbb35f4a6
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xezojetit.ru/wix?keyword=graffitis+letra+m PDF link annotation
    • https://wididalinur.weebly.com/uploads/1/3/3/9/133986726/balatuvetedawuwoveda.pdfIn PDF document text
    • https://rekinijibir.weebly.com/uploads/1/3/2/3/132302710/692775.pdfIn PDF document text
    • https://cdn.sqhk.co/sijiposago/gghIMhg/92257253420.pdfIn PDF document text
    • https://rurajutudap.weebly.com/uploads/1/3/1/4/131437622/de2b3d.pdfIn PDF document text
    • http://nanebaxexob.getenjoyment.net/graphic_designer_jobs_nyc.pdfIn PDF document text
    • https://losebevaxefot.weebly.com/uploads/1/3/5/3/135347065/zovonokafan-lerojupibu-kosaragu.pdfIn PDF document text
    • https://cdn.sqhk.co/simikitivo/bjdii8k/vizugavujoxutufave.pdfIn PDF document text
    • http://kino-vezde.ru/faema_espresso_machine_manualhz8p3.pdfIn PDF document text
    • https://karifizamazo.weebly.com/uploads/1/3/1/3/131383674/d3385f33016b.pdfIn PDF document text
    • https://cdn.sqhk.co/miwataxanis/eOwpijx/fixiwexavozinuzatupodera.pdfIn PDF document text
    • https://cdn.sqhk.co/jivazufevi/iejjbjb/dark_riddles_game.pdfIn PDF document text
    • http://hookup157.site/vexibuwyir73.pdfIn PDF document text
    • https://vijapuloxo.weebly.com/uploads/1/3/0/7/130775263/pamesilusurojoxowaf.pdfIn PDF document text
    • https://gatodagimisosog.weebly.com/uploads/1/3/1/3/131379801/wivogafepemoja-dulifexil-jisadosigokiva.pdfIn PDF document text
    • http://uablog.site/free_wifi_app_downloadj7lmt.pdfIn PDF document text
    • https://jedumetunu.weebly.com/uploads/1/3/5/3/135388943/5396ab.pdfIn PDF document text
    • https://raxokada.weebly.com/uploads/1/3/1/4/131409035/zinetus_tafogefagosugig_zavoz.pdfIn PDF document text
    • https://cdn.sqhk.co/vituxezij/7e8gdQO/nobelebu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC7 4944 bytes
SHA-256: 9cc33b3e078df7dfa3ab2939982e3e4174d98caf5157ec09ba597822b66fc9ce
font_01_sfnt_off0000ef86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF86 10240 bytes
SHA-256: 3480026e9d546efc55b7521ed89df9ccf277683be11327dff4b6cae8e9e43b03

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