Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a75181315e59bc8…

MALICIOUS

PDF

90.1 KB Created: 2021-03-03 23:03:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 264f04ccd4af270824e6a690feeefff3 SHA-1: 42bd5eca9c42f4cdc00d7e1f3bf5b9d17fead05e SHA-256: 6a75181315e59bc8e614a722975f7c07a6d2953d54ed429c58e8c7941069111b
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://leonvi.ru/award?keyword=que+es+el+diagnostico+situacional+en+enfermeria PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4453144/normal_5fe47e6136d1c.pdfIn PDF document text
    • https://cdn.sqhk.co/niripakexad/iSmRGjc/migotinerin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376602/normal_5ffe87d33330b.pdfIn PDF document text
    • http://axecheat5.xyz/23890835968sebnf.pdfIn PDF document text
    • https://cdn.sqhk.co/busumodofu/jbjcPhi/earn_to_die_1_armor_games.pdfIn PDF document text
    • http://phulop.store/sifibitifelomofilinidoksly.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446399/normal_6010b48bd0140.pdfIn PDF document text
    • https://cdn.sqhk.co/fedelubu/jdijjcE/guitar_cumbia_hero_rhythm_music_games_online.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/t1jc1yZ/soul_knight_wiki_codes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458421/normal_60210bc101457.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/jeAG8jc/miranda_lambert_instagram.pdfIn PDF document text
    • https://gawowulovo.weebly.com/uploads/1/3/5/9/135966180/5311653.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377656/normal_5fc6de7b1cc7c.pdfIn PDF document text
    • http://lienforkid.com/how_to_make_a_small_vegetable_garden74ws9.pdfIn PDF document text
    • https://cdn.sqhk.co/dedesonor/haAjgC8/soccer_battle_apk_indir_hile.pdfIn PDF document text
    • https://cdn.sqhk.co/fabupiguboxa/hhgeghg/nulizimeguxogi.pdfIn PDF document text
    • http://opensol.xyz/zegoratussogu8.pdfIn PDF document text
    • https://gofolepoxi.weebly.com/uploads/1/3/4/8/134882907/rujagaw_pixoli_vonog_pagikuxifafi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00011f5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F5B 5400 bytes
SHA-256: 7c260d2c8b0f899ae5f1e5a73591eee95bc6ec0b440aad0d87fb969b76d93e34
font_01_sfnt_off000131a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131A6 12344 bytes
SHA-256: 1801b1f443aa753be9f86a2c188968738fef7b410dc897734aeb8dbc79fdd64a

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