Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a0dacae8a8b0acc…

MALICIOUS

PDF

71.9 KB Created: 2021-03-01 06:53:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 346a7a4d15d6f2c3e789e8108af20058 SHA-1: 44944256715446ef67954c7785b73ba31b1e913f SHA-256: 1a0dacae8a8b0acc85534204152e9b78a20c1865978ecdc4e8ea95488023e731
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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/award?keyword=acting+for+animators+book In PDF document text
    • https://cdn.sqhk.co/wufevinek/qjixoja/22769166880.pdfIn PDF document text
    • https://cdn.sqhk.co/xonipavu/hficjNX/lusevi.pdfIn PDF document text
    • http://kojazunupetip.mygamesonline.org/java_functional_programming_tutorial.pdfIn PDF document text
    • http://bagerisevi.scienceontheweb.net/23629987142.pdfIn PDF document text
    • http://nigavereke.mygamesonline.org/81458474308.pdfIn PDF document text
    • https://dofikusoru.weebly.com/uploads/1/3/4/4/134472045/7b229635d2.pdfIn PDF document text
    • https://lesesagipamagaz.weebly.com/uploads/1/3/0/7/130739561/wunodaxuzafez-zukifizetug.pdfIn PDF document text
    • http://busimaderule.mywebcommunity.org/does_asu_have_a_good_nursing_program.pdfIn PDF document text
    • https://cdn.sqhk.co/runusamopit/giihhd2/super_dancer_chapter_3_audition_round.pdfIn PDF document text
    • https://cdn.sqhk.co/jamolipa/figg5ih/81337003611.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://toxalotivip.epizy.com/26139558674.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/29103106854.pdfIn PDF document text
    • http://sadozejeko.myartsonline.com/how_to_revoke_medical_power_of_attorney.pdfIn PDF document text
    • http://leruvuk.epizy.com/does_graco_contender_65_recline.pdfIn PDF document text
    • http://godofamebowu.rf.gd/59056618287.pdfIn PDF document text
    • http://wolobugoxew.myartsonline.com/5463956240.pdfIn PDF document text
    • http://jatuxijor.epizy.com/south_africa_worship_song.pdfIn PDF document text
    • http://muweluboxakok.rf.gd/14282530700.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_off0000dd33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD33 5360 bytes
SHA-256: ce540b8618fe3a7cb978dfe4b063f0f77aa9a8c7746a2820361e108642dbe101
font_01_sfnt_off0000ef68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF68 10260 bytes
SHA-256: 92d445e21c5b8c18cc633ce4c2c4a63326ad681166aa183886a795f6c5deabf0