Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ff38ceb3de7e2d0…

MALICIOUS

PDF

76.8 KB Created: 2021-04-03 09:11:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: aa5fc9734a4f3c97a78249b3cc9a82c9 SHA-1: ebfa9b11a52753b186fe5af0ba08c58773bd3653 SHA-256: 9ff38ceb3de7e2d093d626c3277f04c54423f51d717208cde7e96c6fa121aff5
126 Risk Score

Malware Insights

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

The sample is identified as malicious by ML classifiers and ClamAV, and contains numerous embedded URLs pointing to potentially malicious domains. The document body, though heavily obfuscated, suggests a lure related to 'forex trading candlestick patterns pdf'. The presence of external URIs and link farm heuristics indicates an attempt to redirect users to external content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/award?keyword=forex+trading+candlestick+patterns+pdf PDF link annotation
    • http://zuzatew.medianewsonline.com/accounting_information_systems_controls_and_processes_2nd_edition_free.pdfIn PDF document text
    • https://sasanufodokedu.weebly.com/uploads/1/3/0/9/130969760/pozosi-xigonez.pdfIn PDF document text
    • https://sowobufujugazid.weebly.com/uploads/1/3/0/8/130873997/xejatobir.pdfIn PDF document text
    • https://cdn.sqhk.co/podoxato/jgxEhi2/war_of_the_worlds_musical_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/vipabumumiw/he9Mgfy/xugaf.pdfIn PDF document text
    • https://mumizovis.weebly.com/uploads/1/3/4/3/134350635/5441007.pdfIn PDF document text
    • https://nagaxubonafebax.weebly.com/uploads/1/3/1/6/131606673/fitobijotiwe_pabixigexifi.pdfIn PDF document text
    • http://gejudoxe.mypressonline.com/memozoz.pdfIn PDF document text
    • http://bodagimama.iblogger.org/liramovadoruzubeposafibuk.pdfIn PDF document text
    • https://cdn.sqhk.co/dijabidasu/gRriXos/netflix_movie_download_limit.pdfIn PDF document text
    • https://cdn.sqhk.co/wifurovud/XYGHP2a/tuxisajigowew.pdfIn PDF document text
    • http://vuxijagodoku.22web.org/how_much_is_a_2016_mazda_cx_5_worth.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kuwofeboxe.rf.gd/41623175586.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/tadinakiruditunafuxagu.pdfIn PDF document text
    • http://noxumalog.onlinewebshop.net/xuzixivujojubelisafesezug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d711ba9b-76bc-415d-9fa2-1a5a7332d8a6/95071413983.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7ed5560-efcb-4f35-a882-1cb6ace64713/the_crown_season_3_episode_1_song.pdfIn PDF document text
    • http://bevonox.epizy.com/androids_and_aliens_61.pdfIn PDF document text
    • http://jataluwapimose.rf.gd/tyt_th-9800_repeater_mode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a56cf197-a20c-46be-8e57-f52117dbf874/gavaduluwuteremusalavewi.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/the_trumpet_of_the_swan_book_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bc4d709-dd72-4d8e-a9f4-6573d6164bcb/52059202232.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_off0000ee59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE59 5408 bytes
SHA-256: a995abaa9091b013f3a1b839d46de5b35a8994194d3eb46567c1d8f9378a605e
font_01_sfnt_off000100e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E4 10848 bytes
SHA-256: 824e84f34759e14517999d1d02d6856f2576678883450be505daf39a2d4b21c9

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