Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d8e7faf18e5f47b…

MALICIOUS

PDF

69.2 KB Created: 2021-03-31 00:39:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e10992a6b8bd6f574c2e0416ae96be6e SHA-1: 5b6bba482b44606e6e1c40b90862b7d47dfc98e5 SHA-256: 0d8e7faf18e5f47baa52d29cdc8134398a8140be1e0d628a7b96654ddf686f1f
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9998

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://soxebez.ru/wix?keyword=pipe+riders+unblocked+games PDF link annotation
    • https://cdn.sqhk.co/vinogusi/dJwt8hb/saxinafo.pdfIn PDF document text
    • https://cdn.sqhk.co/bodavadu/ribhfha/dinosaur_like_triceratops_with_two_horns.pdfIn PDF document text
    • https://lotigasi.weebly.com/uploads/1/3/4/7/134705720/xozavixawibater.pdfIn PDF document text
    • https://cdn.sqhk.co/norifasil/apzNQja/fuwovilewizelazipe.pdfIn PDF document text
    • https://cdn.sqhk.co/wepevuwu/NzC0jdH/46787521123.pdfIn PDF document text
    • http://maxist.ru/the_battle_of_the_labyrinth_graphic_novelb98r9.pdfIn PDF document text
    • http://helplnstagram-confirm.com/dyson_vacuum_repair_stores_near_medkb58.pdfIn PDF document text
    • http://naturka.space/jipipo7x1jh.pdfIn PDF document text
    • http://nugawijuxuv.mywebcommunity.org/wordly_wise_3000_book_5_lesson_6_answer_key.pdfIn PDF document text
    • https://nugakowizadofo.weebly.com/uploads/1/3/0/7/130738823/sazutotopobiguf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375889/normal_600af0c413fc6.pdfIn PDF document text
    • http://begemotiks.space/gisiwuboteludotubwdzy.pdfIn PDF document text
    • http://lngcliente.com/681161596754f5ka.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/39365821179.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459166/normal_6002902f9bc87.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1689b1c8-787c-4546-bdef-7e0d15c19e72/what_is_argument_form_in_logic.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/077ea141-8268-459c-ad6b-211c23598964/are_there_any_recalls_on_2017_chevy_traverse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dfe1f7a-e130-4186-b682-0f0aeb0a7fbf/81888096353.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92fb0316-8761-4f53-b510-f198c184c2ae/45105434629.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f505e8da-c63f-4a8b-bcc2-2613f66f5573/us_army_m65_field_jacket.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_off0000d0ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0AB 5596 bytes
SHA-256: dfa67eb64941bc29cb387919bc3fb246a0a2d2704d437eee2efa9ebb7b8683ee
font_01_sfnt_off0000e398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE398 10544 bytes
SHA-256: f3ed12c7171ba27a71ca7ba324226a9fe544b7dbe91fb38cb2bc82e6ab37d611

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