Malicious PDF — malware analysis report

Static analysis result for SHA-256 468cf382ae0baa41…

MALICIOUS

PDF

77.5 KB Created: 2021-02-26 13:02:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 01b026fd1ec418343549a56a4f69bded SHA-1: ac2e12351069c1932aab804b1829d9094e2e5438 SHA-256: 468cf382ae0baa41967ead4a2399966f538e8bc1273a8bc1a2a45cf456ae6b36
244 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dafemum.ru/wb?keyword=what%20is%20personal%20investment%20policy In PDF document text
    • https://cdn.sqhk.co/nesixepo/ziaC0hZ/lugavirizajukolebiwuxe.pdfIn PDF document text
    • http://mevukavotidu.getenjoyment.net/casio_solar_watch_walmart.pdfIn PDF document text
    • https://tijesefufejeje.weebly.com/uploads/1/3/4/8/134858706/nodozizevejap.pdfIn PDF document text
    • https://cdn.sqhk.co/jigugabopu/4jgMli3/67527203596.pdfIn PDF document text
    • http://paxezot.getenjoyment.net/macbeth_act_2_comprehension_questions_and_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/DnKjihf/just_dance_now_free_song_list.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390324/normal_601a400e46dc6.pdfIn PDF document text
    • https://cdn.sqhk.co/laxefotogulo/hdzzrgc/download_idle_landmark_tycoon_mod_apk_android_1.pdfIn PDF document text
    • https://jitemino.weebly.com/uploads/1/3/0/9/130969659/c63fdcbd8f.pdfIn PDF document text
    • http://vipadobotisituz.mygamesonline.org/how_to_get_better_at_stock_trading.pdfIn PDF document text
    • http://forajadafogaxuv.medianewsonline.com/what_does_the_mark_of_cain_symbolize.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lenobarokolubik.epizy.com/15006535635.pdfIn PDF document text
    • http://sebipukavore.epizy.com/17027083697.pdfIn PDF document text
    • http://jeloneliva.epizy.com/cactus_jack_movie.pdfIn PDF document text
    • http://tunizalureb.rf.gd/sizaxefoxegakanaf.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_off0000f152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF152 5348 bytes
SHA-256: 5eeaca77945e86934a36315e2d26603e5bfc8afb19db8d8cbc0a6ec4e5147f5b
font_01_sfnt_off0001036e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1036E 11448 bytes
SHA-256: 718d8be20834053037f3f6b5dcf66746aa1d4bfad01215c0a35870208e4a6102