Malicious PDF — malware analysis report

Static analysis result for SHA-256 a99232f3f1d9b24e…

MALICIOUS

PDF

64.9 KB Created: 2021-02-25 02:18:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 26d032ceba77f82781e720d03a5072ea SHA-1: e4e05439188e45d95306f9f193d84835279263d0 SHA-256: a99232f3f1d9b24e803837315afec6c6052e37c5e293a0407df5f8ad9329f5fa
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://druttle.ru/award?keyword=kenwood+kdc-355u+flashing+protect PDF link annotation
    • http://lezigovedavide.getenjoyment.net/what_is_the_gpi_of_an_arrow.pdfIn PDF document text
    • https://cdn.sqhk.co/rupomotiz/jcr4gdA/4_pics_1_word_letters_4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413978/normal_60353fab694c3.pdfIn PDF document text
    • https://cdn.sqhk.co/sisadenev/VoPhtQW/cthulhu_death_may_die_kickstarter_unboxing.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484807/normal_601570874e48f.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/ijfPAjc/44758608653.pdfIn PDF document text
    • https://cdn.sqhk.co/wumidimux/fym7hf2/hearts_online_free_play_ok.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493282/normal_5ffb585357b07.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sagalesokalu.epizy.com/anthem_chapter_8-_12_answers.pdfIn PDF document text
    • http://niwuzowebod.epizy.com/bacterial_meningitis_guidelines_philippines.pdfIn PDF document text
    • http://rozabakesolunu.rf.gd/vtech_manual_cm18445.pdfIn PDF document text
    • http://rusireges.epizy.com/password_manager_android_and_ios.pdfIn PDF document text
    • http://lakobomupixa.epizy.com/losiwe.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_off0000c1c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1C1 5860 bytes
SHA-256: 092f2c224bb23883251b61238ebd819dd738f18944ade018d7d24d1c07ac44df
font_01_sfnt_off0000d5d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D3 9540 bytes
SHA-256: 71c35b21767740e1f17f961d08485c0736af17885aadb621091861156fd40bac