Malicious PDF — malware analysis report

Static analysis result for SHA-256 42b1650617785c40…

MALICIOUS

PDF

72.9 KB Created: 2021-03-02 02:47:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 49be9edab4e3a620b1774fc4a2437e13 SHA-1: d760b8c2ca199118f9c4516eb217a5c1f96a593d SHA-256: 42b1650617785c40dee22867a8d77988815fc6839f4b8d035cfc20f0bd4e00a1
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://baarspo.ru/award?keyword=xbox+one+controller+won%2527t+connect+unless+plugged+in PDF link annotation
    • https://cdn.sqhk.co/pumopivosoba/ughii9I/campus_parent_portal_194.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvapolaxaj/l8whgM2/grass_cutting_machine_for_rent_in_hyderabad.pdfIn PDF document text
    • http://fuvesozufinefi.medianewsonline.com/imbalanced_nutrition_care_plan_for_elderly.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/ihjiahi/jamovalo.pdfIn PDF document text
    • https://nofakefol.weebly.com/uploads/1/3/4/3/134341926/sosudubuguj.pdfIn PDF document text
    • https://cdn.sqhk.co/fosigigamef/3tzhjmH/indoor_rock_climbing_courses_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/rivogigaweb/60NdRIe/tabletop_rpg_games_store.pdfIn PDF document text
    • http://gofadivus.mygamesonline.org/68321692011.pdfIn PDF document text
    • https://cdn.sqhk.co/panafilaputu/cFEgjhd/free_drum_kits_net_download_reggae_kit_zip.pdfIn PDF document text
    • https://cdn.sqhk.co/xoraxuvonaf/djeggp6/66232254851.pdfIn PDF document text
    • http://medazuxa.mywebcommunity.org/how_to_screen_for_borderline_personality_disorder.pdfIn PDF document text
    • http://busivel.xyz/87722721105siiw2.pdfIn PDF document text
    • http://silewugebed.scienceontheweb.net/zexikisarabavetureg.pdfIn PDF document text
    • http://gosoxegekiri.mywebcommunity.org/modo_de_produccin_de_la_comunidad_primitiva.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pidodexogejax.myartsonline.com/us_army_flag_patch_upside_down.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_off0000e19e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE19E 5340 bytes
SHA-256: ff060c5307d83d097d83cf604b37f85e61e2e0779801bcb1d9e6d8617eeb93bd
font_01_sfnt_off0000f3f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F2 10052 bytes
SHA-256: 789126ecaff5d4e5bdf18c8199bf8cda6544dfa60e9aa28da000151d8998f2fa