Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e773543d8cba206…

MALICIOUS

PDF

71.0 KB Created: 2021-03-01 18:57:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 47c149cf44a16fc25574a60211d11204 SHA-1: ff629199cf2779501990b15e6981e881da10bbb7 SHA-256: 1e773543d8cba2064b492a308481a1ce6bf8680bbee9fe68d45dc7f4b1138c6a
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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.
  • 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://crophysi.ru/wix?keyword=ar+test+sign+in In PDF document text
    • http://axacheat4.xyz/intro_stats_deveaux_4th_edition_downloadt7ssl.pdfIn PDF document text
    • http://stopro.store/18720677740xit9y.pdfIn PDF document text
    • https://cdn.sqhk.co/sezelijimofi/jijfgVs/initial_d_drift_stage_game.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447087/normal_5fdc73c01d99d.pdfIn PDF document text
    • https://cdn.sqhk.co/popenewosaso/ghglKTU/daily_sale_inc_pompano_beach_fl_33064.pdfIn PDF document text
    • http://raifaisentapp.online/labexidewaldndog.pdfIn PDF document text
    • https://cdn.sqhk.co/fenozidu/mjfggYn/38380921061.pdfIn PDF document text
    • https://cdn.sqhk.co/zavilisuga/J2Jiict/gomavux.pdfIn PDF document text
    • http://securityofusersdevicesonline.site/how_many_years_course_is_ethical_hacking74ynh.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/dazutun/mdr_tb_guidelines_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/gevaravademerif.pdfIn PDF document text
    • http://divepirat.epizy.com/38221897368.pdfIn PDF document text
    • http://rafopaju.rf.gd/prevailing_wage_fringe_benefits_maryland.pdfIn PDF document text
    • http://malenezi.epizy.com/44390469298.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/waanisa_afar_music.pdfIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/lesimawi.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_off0000d508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD508 4600 bytes
SHA-256: 557acb2b2945397f8b3464a8d234b0334e0132c2bc68ef6971005e5387e45271
font_01_sfnt_off0000e4bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4BF 13316 bytes
SHA-256: 79deaf7e52d0ad7d65a74bae7b95f655fa85d987b71409a060279f12bac27dec