Malicious PDF — malware analysis report

Static analysis result for SHA-256 2225176ab1a2c8d6…

MALICIOUS

PDF

70.3 KB Created: 2021-02-17 10:33:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 90470d3df1b0af5964ae5e3fb9783a1c SHA-1: 47072044580a09eb995a05ea40a4542f4cbb7fe6 SHA-256: 2225176ab1a2c8d63094b98f8a56ef1728a8a700e2eaa86a63ff87a17ac7f40a
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://baarspo.ru/wix?keyword=growing+growing+growing+investigation+1+answers PDF link annotation
    • https://cdn.sqhk.co/giruzegovu/NgeNnTA/consignment_art_gallery_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/hcjbihg/tapinir.pdfIn PDF document text
    • https://cdn.sqhk.co/jebuxanit/lMhi6hc/btd6_apk_download_free.pdfIn PDF document text
    • https://cdn.sqhk.co/xurawupo/9jdjhgf/chess_online_olympiad_wiki.pdfIn PDF document text
    • http://8gusevshop.website/glitch_video_effect_appfy3jr.pdfIn PDF document text
    • https://muxavitegujun.weebly.com/uploads/1/3/1/6/131637584/f822ffd11d1de.pdfIn PDF document text
    • http://originalhallyu.com/934104810407uglg.pdfIn PDF document text
    • http://mysteps.online/command_prompt_codes_windows_10kefhe.pdfIn PDF document text
    • https://cdn.sqhk.co/woxiwovar/mghG5jd/daluxedabiro.pdfIn PDF document text
    • https://godivibodo.weebly.com/uploads/1/3/4/0/134040440/31c0004f.pdfIn PDF document text
    • https://pibefugaradaxo.weebly.com/uploads/1/3/1/3/131398186/vubaxopopumibujapol.pdfIn PDF document text
    • http://laura-egorova.ru/the_sims_cheats_iphonef0oju.pdfIn PDF document text
    • https://donurufeto.weebly.com/uploads/1/3/4/8/134898164/wukedil.pdfIn PDF document text
    • https://cdn.sqhk.co/rifarako/fZhdhcG/zombie_hunter_king_hack_mod_apk_download.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://s3.amazonaws.com/posufij/aruba_2530_8g_poe_switch_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/gaxuwejugema.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/kuxemez.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_off0000ca37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA37 4844 bytes
SHA-256: 6f8953d4148f14236718fbf30e9080eac5b02d59c3d7311e170570e529be58a8
font_01_sfnt_off0000dad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD8 10196 bytes
SHA-256: 51e80f404723e12af5cddcb801b4f3c64f5ffda39ee871c796a2020d80a9c177
font_02_sfnt_off0000fdc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC5 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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