Malicious PDF — malware analysis report

Static analysis result for SHA-256 0be895a7bd0bd2f5…

MALICIOUS

PDF

156.4 KB Created: 2021-03-08 18:48:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 947cb5eefcf5d6dbe06e18e71352277f SHA-1: 9bf8caaeab48725bd220ee018b72931158ed05a8 SHA-256: 0be895a7bd0bd2f56e75e2cbd7fdd32fa165d1e95ef87236819c3ab750844895
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://seumenha.ru/wix?keyword=adaway+apk+xda PDF link annotation
    • http://texifudosino.mygamesonline.org/significado_de_la_simbologa_de_los_diagramas_de_flujo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470205/normal_6014da4f7c4d4.pdfIn PDF document text
    • https://cdn.sqhk.co/potiribuwuf/ngcsQsC/ygopro_odd_eyes_raging_dragon_deck.pdfIn PDF document text
    • http://sujimelowakolop.medianewsonline.com/cfop_vs_beginners_method.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476756/normal_602aa8a4d2b7a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385631/normal_5fee8a20892b0.pdfIn PDF document text
    • http://boforotaje.mywebcommunity.org/samsung_galaxy_tab_t580_hard_reset.pdfIn PDF document text
    • https://cdn.sqhk.co/nurijodefa/cdBhbom/bekigobudaf.pdfIn PDF document text
    • https://cdn.sqhk.co/jurugaguvedu/gihfiio/dune_hd_control4_driver.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421937/normal_6037503f13724.pdfIn PDF document text
    • http://kubosikavudux.mygamesonline.org/65675117121.pdfIn PDF document text
    • http://tujidal.mypressonline.com/cuantos_son_los_libros_juego_de_tronos.pdfIn PDF document text
    • https://cdn.sqhk.co/buvaboda/Njhgdhh/speedball_paintball_game_rules.pdfIn PDF document text
    • https://cdn.sqhk.co/vakenuda/bJ6ggB2/download_minecraft_mod_world_edit.pdfIn PDF document text
    • http://fuwiduwoxobol.mygamesonline.org/meade_12_lx200_gps_telescope.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxukulalodi/ajc8kXU/homekit_control_center_ios_14.pdfIn PDF document text
    • http://woxijakuzadajew.getenjoyment.net/avancemos_2_unit_4_lesson_1_reteaching_and_practice_answers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vorisenunajix.myartsonline.com/how_to_make_a_one_shot_dd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16193671-774b-4715-b603-b66a9f42a4bf/carl_jung_shadow_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be75d309-a72f-44a9-a422-a415b18e0c73/how_many_atoms_are_present_in_a_compound.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e0b46de-f5ac-42f5-b64f-c26b97a218a8/80548161496.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd833493-d725-4f07-ac12-5b5af7e81810/zotuxinojo.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_off00022a9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22A9D 4960 bytes
SHA-256: f431c208262ac9788fadb474f3a8295593f32a921b2442ebc1749f0c8b992bac
font_01_sfnt_off00023bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23BB7 11628 bytes
SHA-256: 1bc0fe062568031841a729aaf205c999fde9a86eaea897e28724b552fc358145

Open this report in the interactive analyzer, or submit your own file for analysis.