Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d5cb74baaecb48b…

MALICIOUS

PDF

72.5 KB Created: 2021-02-24 23:28:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 11d2e2501887aeec456049eec7759ebc SHA-1: a48bd48e32c783c67411dcb216c88bc5ed8d2a3c SHA-256: 6d5cb74baaecb48b4bcd61b132b326afc9b604dd16f5bc4509d99a7ffdc9c41b
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 8

  • 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 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/award?keyword=how+to+reset+installer+code+on+safewatch+pro+3000 PDF link annotation
    • https://cdn.sqhk.co/duxadikoti/HWg7nic/used_snes_games_for_sale.pdfIn PDF document text
    • http://laulu-go.ru/manual_dexterity_activitiestez0w.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxonewebuke/Mwoih0d/19186957482.pdfIn PDF document text
    • https://ludurodeb.weebly.com/uploads/1/3/4/8/134852143/solorulofef_bosebukunap_bedumuze_wojiwof.pdfIn PDF document text
    • http://yoptan.space/toddler_poncho_patterne3m7g.pdfIn PDF document text
    • https://cdn.sqhk.co/wusakituzu/jdqgecP/has_the_boo_radley_game_changed.pdfIn PDF document text
    • http://beach-fruit.fun/102918816206srhk.pdfIn PDF document text
    • https://xogiwudib.weebly.com/uploads/1/3/4/7/134715522/593980.pdfIn PDF document text
    • https://pupalajapifev.weebly.com/uploads/1/3/1/4/131454396/nudulodo.pdfIn PDF document text
    • https://cdn.sqhk.co/dusujukakal/hcichg8/57462286391.pdfIn PDF document text
    • https://cdn.sqhk.co/vozedolurezu/gitwjio/88665021027.pdfIn PDF document text
    • http://vvinorama.fun/browning_a5_serial_number_starts_with_xf8s17.pdfIn PDF document text
    • http://kojazunupetip.mygamesonline.org/43182798063.pdfIn PDF document text
    • https://penopetidurip.weebly.com/uploads/1/3/2/8/132815040/gezoseme.pdfIn PDF document text
    • https://cdn.sqhk.co/wepiwojeta/b6pJhbO/bowling_christmas_eve.pdfIn PDF document text
    • https://cdn.sqhk.co/niwonosorude/ieetbgd/water_parks_in_ohio.pdfIn PDF document text
    • https://cdn.sqhk.co/vikaxokaso/idjhkKr/56698660912.pdfIn PDF document text
    • http://tulomodev.getenjoyment.net/how_to_put_graco_stroller_back_together.pdfIn PDF document text
    • https://cdn.sqhk.co/fapewakuw/jcNNZjU/cupcake_games_to_play.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/52126744684.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bogalibamadom.myartsonline.com/44383465922.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_off0000deac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAC 5604 bytes
SHA-256: e3d203b90b6fb770d9e77bdf02a8e623eb7cd4253a088bda64253b0e05b35276
font_01_sfnt_off0000f1c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C0 10196 bytes
SHA-256: b11d8eb375c85b05c2bd8abfa7b8d9ae7abb13236cf560d94fdc309e4b401a7e