Malicious PDF — malware analysis report

Static analysis result for SHA-256 375860e1d30b9dfd…

MALICIOUS

PDF

65.1 KB Created: 2021-02-13 07:43:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7d337b0159f0656544491eb2eb16edb0 SHA-1: dd8ecc010d7ae9e4e80870ab199a2f0529bba4a8 SHA-256: 375860e1d30b9dfd063c159923876f85620d4a5332f6f5fdf59917d274bb2dbf
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=brian+tracy+tamil+books+pdf PDF link annotation
    • http://bogplaktnc.fun/kuwowodanuvogomexezuxubtuucn.pdfIn PDF document text
    • http://naturaleone.space/doom_ti_84_plus_ceq08hr.pdfIn PDF document text
    • http://vashastrahovka24.ru/cifras_significativas_redondeojo46n.pdfIn PDF document text
    • http://tersq.fun/396660871972acla.pdfIn PDF document text
    • https://cdn.sqhk.co/kobedobofepo/ecifCjc/jasejikalaj.pdfIn PDF document text
    • http://uaportal.site/actively_managed_equity_funds_underperformux8yr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477626/normal_5ffe04f574a1c.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/wizakokowe/88030637798.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/dividing_decimals_worksheet_grade_8.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/ashokan_farewell_guitar_sheet_music_free.pdfIn PDF document text
    • http://vopuxoke.epizy.com/chicago_manual_of_style_ibid_footnote.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/85903493918.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/gigozabam.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/damene.pdfIn PDF document text
    • http://zusewijoje.epizy.com/libro_el_camino_del_heroe.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_off0000c0c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0C2 5656 bytes
SHA-256: 2f4dc46883db0260e6dfbb72463bea4d0d7539ae3ace0ebcc3eab062c12a2661
font_01_sfnt_off0000d3f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F3 10108 bytes
SHA-256: 4dd3a0697f08dface713f7f74ef6896d98d8e7a55592efa53b3f6aabfd5c9b8f