Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8d077174e1fad50…

MALICIOUS

PDF

70.3 KB Created: 2021-02-10 14:30:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 16e7e499c60733bf4cc384a1a75f7fe8 SHA-1: 0e09ff51ae903d27de5161a05f63f5a0e26f3ca9 SHA-256: a8d077174e1fad5082c835fa0565a7d996b1a709688622e872ac8db959d74162
146 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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://maypoin.ru/wb?keyword=mr%20happy%20cooling%20gel%20sheets PDF link annotation
    • https://vupavekana.weebly.com/uploads/1/3/4/4/134493500/fisexegose.pdfIn PDF document text
    • http://tevalevas.22web.org/russian_script_font_free.pdfIn PDF document text
    • http://mafujewulig.66ghz.com/bfa_alchemy_level_guide.pdfIn PDF document text
    • http://pinudub.iblogger.org/binkw32._dll_windows_8_32_bit.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/fjfPia7/todolist_react_github.pdfIn PDF document text
    • http://apparentlyopt.com/algebra_2_dividing_polynomials_worksheet8ta1a.pdfIn PDF document text
    • http://fb-pageunderreview.com/45793353415xy7xy.pdfIn PDF document text
    • https://cdn.sqhk.co/venitalobeni/gjjjjeO/28017569175.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lokimutopilar.epizy.com/web_design_templates_free_php.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/blank_calendar_templates_excel.pdfIn PDF document text
    • http://wuxekijonudi.epizy.com/dell_bios_update_utility.pdfIn PDF document text
    • http://pirajog.epizy.com/english_to_afrikaans_dictionary_apk.pdfIn PDF document text
    • http://zezexobufimorum.epizy.com/carl_jung_teoria_del_psicoanalisis.pdfIn PDF document text
    • http://lubesugoninop.epizy.com/gajeburunut.pdfIn PDF document text
    • http://satanomoxa.rf.gd/minecraft_1._8_free_pc_windows_7.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_off0000d403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD403 5300 bytes
SHA-256: 6cdf9aa107d469190b8941af1724cb89a249ffd5f57e747bf0e493203efdeb79
font_01_sfnt_off0000e619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE619 11276 bytes
SHA-256: 7b37e4a123cc03e6345274a58639909d625cb1c780c376be16972f2417d8f5d0