Malicious PDF — malware analysis report

Static analysis result for SHA-256 238c04ff202709af…

MALICIOUS

PDF

72.9 KB Created: 2021-03-12 05:56:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 15982d19706cb4d1b388bcc43d73ae72 SHA-1: 95c5c50cacd796729a4d099836da595bb85c8abe SHA-256: 238c04ff202709af3dd21af6d7e5275df186c19df0c7705cfd61d9c39c886d27
186 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 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://ponafet.ru/award?keyword=calculus+3+pdf+jkuat PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495034/normal_5fc9d50157df4.pdfIn PDF document text
    • https://pixasarajesuwov.weebly.com/uploads/1/3/4/6/134688766/3972118.pdfIn PDF document text
    • http://wide-do.top/garmin_nuvi_50lm_reviewlz2eh.pdfIn PDF document text
    • http://sis-paypal.com/audio_recorder_and_editor_app53mxd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450256/normal_6022bd533798c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427506/normal_602782b573f49.pdfIn PDF document text
    • https://maviwodoke.weebly.com/uploads/1/3/1/6/131606431/nujixuz-bonaposalalif-kinoti.pdfIn PDF document text
    • http://erogan-columbia.site/21183287118q8pfs.pdfIn PDF document text
    • http://rollernefrit.xyz/241900886980p64h.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366961/normal_602558896d204.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455659/normal_5ffca28a952a0.pdfIn PDF document text
    • http://expressvpn.store/508051805253zvit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/e25df56a-519a-4986-94b2-77b4a2739ed0/xisikadebutelew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca3d5a36-2940-4f97-98fc-aef4102462de/vusorojapebux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/549aa707-f407-4749-8a1c-764d0d74dd1e/pentair_easytouch_8_function_control.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccea1009-7474-4824-8099-2b7bbdbabdc6/antonio_gramsci_kltrel_hegemonya.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b2d2860-6dbe-480c-a9e3-850a4c8dcb0b/data_analysis_tools_excel_mac.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BB 4880 bytes
SHA-256: 08735ba3eb23d553e605850338d0073e6b22829db1296dab7129948a6a471a87
font_01_sfnt_off0000e568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE568 10484 bytes
SHA-256: 0ef7b039bb6b345ad756a50b15bcbe328589907e9fbc3aea75f001d7a7511d3d
font_02_sfnt_off0001087c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1087C 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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