Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff10bbd540abc639…

MALICIOUS

PDF

73.6 KB Created: 2021-02-17 17:58:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f7257cf40d4fe40de4c4aaccae63b7d4 SHA-1: 4c99b2dad2c36179eb809478b4c46ed34b5b6850 SHA-256: ff10bbd540abc6390e20a2298623ce251af797d4aa386269ac3cea33287adc19
126 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
  • 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://bologen.ru/wix?keyword=csueb+spring+2020+commencement PDF link annotation
    • http://zoo-taxi.site/102752305343e3da.pdfIn PDF document text
    • http://bavipame.22web.org/nccn_guidelines_anaplastic_thyroid_cancer.pdfIn PDF document text
    • http://form-lnstagramcopyrightservice.com/sediltxwyf.pdfIn PDF document text
    • http://bbbbbbbbeeee.space/raliveputikaxdgzm6.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/jaiijgT/6538770476.pdfIn PDF document text
    • http://4d-5d.com/palejafisakujivv8hy.pdfIn PDF document text
    • http://tortomsk.ru/422576753561t1s4.pdfIn PDF document text
    • http://useplafond.xyz/lusijukotexususiqpx3n.pdfIn PDF document text
    • http://buyervannakupitvsem.xyz/677486457050ivha.pdfIn PDF document text
    • http://keto-menu.online/esl_classroom_management_tips_and_tricks3d6ak.pdfIn PDF document text
    • http://mandarins.space/mastering_bitcoin_programming_the_open_blockchain15ufk.pdfIn PDF document text
    • http://allieshouseofhope.com/arinc_429_data_bus_formatudumm.pdfIn PDF document text
    • http://1fps.ru/vumezokuretunovaponaposusd13v1.pdfIn PDF document text
    • http://aduo5.online/82042055110rbudw.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/tokatefozude/base64_encode_not_working_in_ie.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_off0000e376.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE376 5332 bytes
SHA-256: c3c632c4c0245e78e274bb7367b6f955d19aa75ac76d7bdee62483d440783cee
font_01_sfnt_off0000f58a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF58A 10544 bytes
SHA-256: b2dd4140c683e4c4cce8c780680f6ac0d3328a019e6fd59c0ebcd957d74481e6