Malicious PDF — malware analysis report

Static analysis result for SHA-256 2af054b236a9619d…

MALICIOUS

PDF

78.1 KB Created: 2021-03-04 19:02:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1bf9fde4a86a8527c3e80ffbc565ebfb SHA-1: a9c5508e25cd1ccb65919c5c97b8e42919f5b209 SHA-256: 2af054b236a9619df2e04cb98739987542d5481e1712e77b5f7d0ad84031942f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://fokemale.ru/award?keyword=crochet+stitch+guide+free PDF link annotation
    • https://cdn.sqhk.co/xokipuxat/wjgBid8/90s_house_music_playlist_youtube.pdfIn PDF document text
    • https://fevebelok.weebly.com/uploads/1/3/4/0/134012800/57a8ae88c.pdfIn PDF document text
    • http://oneitstore.info/524516034894etfk.pdfIn PDF document text
    • https://cdn.sqhk.co/karadirimose/JuMhbTw/20095516129.pdfIn PDF document text
    • https://cdn.sqhk.co/xumelesep/ds4jd32/samsung_experience_service_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/MCgihig/15019570983.pdfIn PDF document text
    • http://bexodasavuf.22web.org/fewiruguronemu.pdfIn PDF document text
    • https://logizovaxe.weebly.com/uploads/1/3/4/5/134506690/wizapif-jawujinin-wevuvukejan.pdfIn PDF document text
    • https://cdn.sqhk.co/kagelemovo/hhgc8jg/zerudamokamekikame.pdfIn PDF document text
    • http://djami.ru/como_transformar_de_centigrados_a_kelvin847b7.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/jivamubug/predicas_cuando_lo_que_dios_hace_no_tiene_sentido.pdfIn PDF document text
    • http://dugufinawaxet.epizy.com/arch_linux_run_android_apps.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/nccer_electrical_test_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/where_is_the_learn_button_on_my_stanley_garage_door_opener.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/magazine_layout_templates_free_microsoft_word.pdfIn PDF document text
    • http://lokimutopilar.epizy.com/bts_2019_summer_package.pdfIn PDF document text
    • http://kowogipat.epizy.com/72856546221.pdfIn PDF document text
    • http://robogotut.epizy.com/bismuth_quadruple_therapy_guidelines.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_off0000f6af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6AF 4948 bytes
SHA-256: 225ca8eaa6993e205a942d28a9dffcbf034568382f9f4967f0181c7c0a46992c
font_01_sfnt_off0001077c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1077C 10636 bytes
SHA-256: 22fed77bcaa008d1e33ac786dfc818ff9b3386b37d375e8916c4538c8f6e9282

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