Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ac0e0bfa8380ad1…

MALICIOUS

PDF

72.8 KB Created: 2021-02-26 16:40:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: cd835d23e9becf79047c2fd026d06d2f SHA-1: 7e3a84a206f426aecb3cf4454f437546a758dfd0 SHA-256: 9ac0e0bfa8380ad1ee41b7e6ad708652f757071da13016593f3983e71e4ca71e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://yafferge.ru/award?keyword=dyson+mini+motorhead+use In PDF document text
    • https://kevonixoxudunu.weebly.com/uploads/1/3/0/7/130775897/nudaxitem.pdfIn PDF document text
    • https://giduzuzetedeze.weebly.com/uploads/1/3/4/8/134853145/junilerel.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/61739721119.pdfIn PDF document text
    • http://lifizix.22web.org/how_to_calibrate_compass_on_2016_chevy_tahoe.pdfIn PDF document text
    • https://xesisawizes.weebly.com/uploads/1/3/1/6/131606125/bamim_siwereluses_xepati_lelof.pdfIn PDF document text
    • http://xedeporib.medianewsonline.com/flash_player_chrome_support_ending.pdfIn PDF document text
    • http://lg-supportteam.com/apa_style_guide_owl97hpi.pdfIn PDF document text
    • https://mepodatadun.weebly.com/uploads/1/3/1/4/131452799/zetasinojulup_pexujadiwa_wenuvej_wekixikanulitev.pdfIn PDF document text
    • http://zelenege.iblogger.org/paramedic_hand_off_report.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nefigubisi.epizy.com/54693858859.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/printable_anecdotal_record_template.pdfIn PDF document text
    • http://jugebifa.epizy.com/81799133582.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/how_much_does_it_cost_to_get_laptop_fixed.pdfIn PDF document text
    • http://kojodidekojamu.rf.gd/bharat_mata_teri_kasam_song.pdfIn PDF document text
    • http://pewaxoxepizus.rf.gd/73435086803.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/vamuvuzasuri.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_off0000e141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE141 5132 bytes
SHA-256: 03c187a70f138d57ac63760a8982ada6d6a75a4da6bf70d199dbb4c39b60c32d
font_01_sfnt_off0000f293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF293 10596 bytes
SHA-256: 25fc356893883d1185bb939ac352f4e7c148ae484ec09cb806848c3cd6cc497a