Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba472cda42f36ee5…

MALICIOUS

PDF

72.1 KB Created: 2021-01-26 17:16:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8ba96d178487cacff12e8a7cc658d599 SHA-1: 712ec8c9bf141eb63f7d4dfe04bad4f3837772b7 SHA-256: ba472cda42f36ee5d65625e4e9a14103027faf2afdeb3e779c44fbf5936f50f7
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://jacksth.ru/123?utm_term=adobe+creative+suite+5+%2528cs5%2529+master+collection+download PDF link annotation
    • http://burrrhey.tech/physician_assistant_jobs_san_diegoa9cig.pdfIn PDF document text
    • http://wifejopoxakobo.iblogger.org/lomijexemepilavusawiwegi.pdfIn PDF document text
    • https://bivapere.weebly.com/uploads/1/3/4/6/134689139/6642609.pdfIn PDF document text
    • http://prizinsta365.site/pixel_starships_dolores_statsno8e6.pdfIn PDF document text
    • https://wujojebexubab.weebly.com/uploads/1/3/1/3/131380870/9821794.pdfIn PDF document text
    • https://cdn.sqhk.co/zuvutose/q6gdjbz/29828556436.pdfIn PDF document text
    • http://rexapeduke.66ghz.com/cydia_ios_10._3._4.pdfIn PDF document text
    • https://cdn.sqhk.co/lokuwanij/hbwghx8/27320718858.pdfIn PDF document text
    • https://cdn.sqhk.co/sexuzoropa/P7hbTih/apollo_animal_crossing_pocket_camp_gift_guide.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/bidurudilidujug/bekarolibove.pdfIn PDF document text
    • http://limazajot.rf.gd/dazodidizowaronosegibiwib.pdfIn PDF document text
    • http://nuvujudidasutem.rf.gd/51566075271.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/swiftkey_pro_apk_cracked.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/10490193259.pdfIn PDF document text
    • http://nanesipub.rf.gd/emergency_reporting_procedures.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_off0000d9ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9EA 5644 bytes
SHA-256: 5dfac57e294e60feff5fb709b24470fd6f1a535f29ee11c23b2f3bca5f285d45
font_01_sfnt_off0000ed2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2A 11164 bytes
SHA-256: 0b866feea2ec2b7917080299a5080059dc3540e023a76bf0a3aded6f97e52527