Malicious PDF — malware analysis report

Static analysis result for SHA-256 3230ddaf8d427b3e…

MALICIOUS

PDF

72.5 KB Created: 2021-03-23 12:45:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 56e692fdce6538b2c7192cb70e262ba3 SHA-1: 50cbddcbedcdf7ab92bca13bdb627fca6c50e829 SHA-256: 3230ddaf8d427b3e70a3106b3a6ab2e2fc5371268c9807d96f2ad29fb1094e63
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=char+broil+performance+tru+infrared+manual In PDF document text
    • http://arnautmebel.ru/92500952347kalw6.pdfIn PDF document text
    • http://shimano-stradic.ru/774949080115tmjz.pdfIn PDF document text
    • http://leree6.club/81456477801afw2i.pdfIn PDF document text
    • http://drive4mclanemilwaukee.com/pojupixodekitoylaei.pdfIn PDF document text
    • http://store50off.info/photo_pip_photo_editor_app4d2v7.pdfIn PDF document text
    • http://choosemadam.site/gesavajukuvipsof4h.pdfIn PDF document text
    • http://sfr-espace.best/massey_ferguson_35p36ck.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/1eeda017-d098-457b-97bb-a49fe17b2f2b/sportline_pedometer_345.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95d47025-cdfe-40ee-a20f-00f6285b50ea/how_to_check_lockpicking_level_wow.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/fallout_1_official_strategy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/70794748412.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21de5b2e-9f69-44ca-a6c1-05b372c55510/laxatajazijefizetoxadibil.pdfIn PDF document text
    • https://s3.amazonaws.com/jupoti/bible_study_guide_1st_quarter_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/hoover_sprint_quickvac_filter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20dad262-2b84-4317-b646-2305d8a4515a/wivitifasidewuz.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/63690957823.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86a3af4e-9810-43fe-a962-3ec2ec416743/christmas_writing_activities_for_6th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/xulejelonefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c69a8b5f-986c-4097-b9a8-8bcd9e7302c5/45795848868.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e49c673-b503-4c46-b081-73543b64c791/wikelidowebodofipugifa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7bf3528-15ed-446e-bbb5-202ed5d6a0bd/63468224341.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/silosavanojixuwizam.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_off0000de5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5C 5260 bytes
SHA-256: 984db2cf9e1377ad70536c29f3f812103dbf71d1fde112c6f1d20e4afb1b4bf3
font_01_sfnt_off0000f00c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00C 10836 bytes
SHA-256: ae2fcbffe19f5e7ff247456b8f39f6451b73e200ec0bf85fbd9e95f594af3c72

Open this report in the interactive analyzer, or submit your own file for analysis.