PDF malware analysis — malicious · 3e68cb0082d3fae4

MALICIOUS

PDF

82.1 KB Created: 2021-03-19 14:36:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23

MD5: 50f1ee9ea6d6a212ac344fb6bb8fdf0e SHA-1: 9c0edce4a7f6cff8ad7347b0c41fb111de6b753e SHA-256: 3e68cb0082d3fae44ed3bc0b380b5bf3c815fa3532e0bb34a898b75597f570b1

196 Risk Score

Malware Insights

MITRE ATT&CK

T1059 Command and Scripting Interpreter T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a clipboard-command (paste-and-run) lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE

Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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://vilenefex.ru/award?keyword=como+aprender+a+dibujar+a+lapiz+paso+a+paso+pdf PDF link annotation
- https://vomimefime.weebly.com/uploads/1/3/5/3/135316042/muser_fenemevixufo_riruzipexome_nopexox.pdfIn PDF document text
- https://cdn.sqhk.co/jobasalem/bL4T3BG/packers_eagles_live_score.pdfIn PDF document text
- https://rawonosegapit.weebly.com/uploads/1/3/5/3/135314608/47bb547805efb5.pdfIn PDF document text
- https://rifubagozoj.weebly.com/uploads/1/3/2/6/132695416/leredol.pdfIn PDF document text
- https://revugegan.weebly.com/uploads/1/3/4/6/134682990/tipovera-rigov.pdfIn PDF document text
- http://sberpodarok2020.online/business_english_learning_materialsni6z4.pdfIn PDF document text
- https://xanifinutevafux.weebly.com/uploads/1/3/0/7/130739814/dab6130f0.pdfIn PDF document text
- https://lekofubazag.weebly.com/uploads/1/3/1/8/131872104/7786448.pdfIn PDF document text
- https://cdn.sqhk.co/bumogebiz/ObgjhzL/password_photo_lock_screen_apk.pdfIn PDF document text
- https://rutelixiriselop.weebly.com/uploads/1/3/4/7/134748314/2799931.pdfIn PDF document text
- https://cdn.sqhk.co/salavogi/shh5mjb/zelekamuwipezezowe.pdfIn PDF document text
- https://dudafizegananif.weebly.com/uploads/1/3/4/8/134864336/gasagivexoxenu.pdfIn PDF document text
- https://cdn.sqhk.co/gidenateg/zGgjjen/40684193149.pdfIn PDF document text
- https://cdn.sqhk.co/laxuweredex/hatgNpe/hull_city_stadium_guide.pdfIn PDF document text
- https://vajipexinonadol.weebly.com/uploads/1/3/4/0/134096003/239490e3.pdfIn PDF document text
- https://xoxazibazosilex.weebly.com/uploads/1/3/4/5/134590820/fogibaloze-magovezelefedak-duwavaxak-votajodawupo.pdfIn PDF document text
- http://ukranews.icu/sizogajezujuxupklim9.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/lolijexejomak/does_victorias_secret_have_free_shipping.pdfIn PDF document text
- https://s3.amazonaws.com/nafoxuda/lp_smartside_lap_siding_installation_guide.pdfIn PDF document text
- https://s3.amazonaws.com/ragejufa/cost-volume-profit_analysis_questions_and_answers_doc.pdfIn PDF document text
- https://s3.amazonaws.com/figidireki/libro_de_sueos_significado_y_numeros.pdfIn PDF document text
- https://s3.amazonaws.com/napoledunadigo/36055688264.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f2f7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF2F7	5276 bytes
SHA-256: `ab937827a367eb21200bb9b144f8f463dd25114735c92bedbf6cc3e038897837`
`font_01_sfnt_off000104c3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x104C3	11692 bytes
SHA-256: `4a78ef79a2b10c11a09c3b3d80c50467dd30421c40f3fd28fe6c10db22c83bad`
`font_02_sfnt_off00012ca7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12CA7	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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