Malicious PDF — malware analysis report

Static analysis result for SHA-256 22a70464aebe105c…

MALICIOUS

PDF

85.1 KB Created: 2021-03-18 03:43:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: b6ac9237683051af06434adc1d7b9b53 SHA-1: b31c211af1f5f05658a59dd8b1dbdf2744fe19ce SHA-256: 22a70464aebe105cfffe8c0e5ea5ae26edc6639cfe77287a6b6e598cd53fa857
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to disposable hosting or link farms, suggesting a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically indicates the document is designed to manipulate search engine results to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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=adios+america+ann+coulter+pdf PDF link annotation
    • http://strgb2.ru/excalibur_car_alarm_remotekio15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409107/normal_603867a520a04.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505096/normal_5fe348d63db5c.pdfIn PDF document text
    • https://cdn.sqhk.co/wexufenu/hblfYjj/gipufilukukunifewavukok.pdfIn PDF document text
    • https://cdn.sqhk.co/wejagamewo/nhh1jaN/87853292672.pdfIn PDF document text
    • https://cdn.sqhk.co/dokukavifig/58ghgic/eset_parental_control_license_key_crack.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/wEjaNQ6/logapuxuxidulurikanewo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463010/normal_5ffc9d0aae732.pdfIn PDF document text
    • http://basiditdcf.space/need_for_speed_heat_studio_app_download80uyn.pdfIn PDF document text
    • http://zelopaqq.xyz/how_to_factory_reset_nighthawk_ac19000cma7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402486/normal_5fcf93bf732d2.pdfIn PDF document text
    • http://activa-fb.com/do_lg_washing_machines_have_filters9pv8o.pdfIn PDF document text
    • https://cdn.sqhk.co/pigexebobe/dgg9hih/dijanataniwogevosixasur.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/jj9ijhe/playstation_now_multiplayer_games_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_60142acb37eaa.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/dab001fa-6054-4c3c-9e97-bbe3a1f2d813/tutalubeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82f50a52-00f3-429d-a6cd-e29d55c7e81c/36345024438.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/867b9105-d79c-43bd-9827-3eae94aeebd6/28240215596.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f5de63d-38f8-4852-a0ca-e7b1edbab6be/husqvarna_460_rancher_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/why_does_my_kidde_smoke_and_carbon_monoxide_alarm_keep_beeping.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/alarm_clock_ringtone_free.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/bubble_blast_2_game.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_off00010cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB5 5288 bytes
SHA-256: 28c30123583b06e22a61a68abf96d59a6511856d789ccc56a83d93b1f5ca577f
font_01_sfnt_off00011e9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E9B 12564 bytes
SHA-256: 30022676052f2ed5aa6b3e5ab387a25469499d9abdbad9805d3c57e76694b564

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