Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dabaf9a72430cb6…

MALICIOUS

PDF

90.2 KB Created: 2021-04-12 14:12:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 34d21fdb65563e4b63d0527685ea5752 SHA-1: 1032a83828e6085a7b7d677cb667c7536d390ce9 SHA-256: 0dabaf9a72430cb6a9e16e78497008872f09bc5c395e6855846a06d14a54f72f
156 Risk Score

Malware Insights

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

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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 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.
  • 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://maypoin.ru/strik?utm_term=toshiba+satellite+l775d-s7340+battery PDF link annotation
    • https://wigojakumadofef.weebly.com/uploads/1/3/1/6/131606024/2912422.pdfIn PDF document text
    • http://jusibebobekig.iblogger.org/arduino_mega_2560_manual.pdfIn PDF document text
    • http://diletemofuvufu.22web.org/amigdalas_cripticas.pdfIn PDF document text
    • http://nuzarekuzugav.mypressonline.com/27815165685.pdfIn PDF document text
    • https://giligigava.weebly.com/uploads/1/3/4/4/134494785/dunuxuduje_jerox_tifutupatetu_gekixatuvuwus.pdfIn PDF document text
    • https://dikekivex.weebly.com/uploads/1/3/0/7/130775400/rizitola_tokafikemo_buxoxufobuv_pasikedugapadig.pdfIn PDF document text
    • https://cdn.sqhk.co/loxepafigav/eZ57jbA/nalotus.pdfIn PDF document text
    • http://copyrighytsupport.com/obduction_villein_number_222eo3cl.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/ij7jbig/homescapes_hack_level_64.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/zlhfKNd/76087322336.pdfIn PDF document text
    • http://visunuduxat.mypressonline.com/tazupidib.pdfIn PDF document text
    • https://dakawomafi.weebly.com/uploads/1/3/5/9/135959339/batezururobeve.pdfIn PDF document text
    • https://fuvibopozu.weebly.com/uploads/1/3/4/3/134373007/fc1ca4e638b.pdfIn PDF document text
    • https://cdn.sqhk.co/tawodosa/d6Sghdu/administration_management.pdfIn PDF document text
    • http://bossyonlinex.com/tuwadetevegexiu1ajy.pdfIn PDF document text
    • http://sutiboju.sportsontheweb.net/urea_alta_creatinina_normal.pdfIn PDF document text
    • http://magic-spring.com/gutonogarepapomadee6wff.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/gta_5_digital_edition_ps4.pdfIn PDF document text
    • http://xexapofibej.rf.gd/dejozitem.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/my_friend_dahmer_film_online_subtitrat.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/businessman_3_movie_300mb.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/atrial_septal_defect_pada_anak.pdfIn PDF document text
    • http://rebopugosive.rf.gd/bowuluruf.pdfIn PDF document text
    • http://rapoxuse.epizy.com/boxaruvunutes.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/14626709540.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000117d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117D5 2828 bytes
SHA-256: eec2311198495a4bc353016469730966835d49679daeed18a98faa9ab15954d4
font_01_sfnt_off000121df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121DF 5736 bytes
SHA-256: 48bf9feac997cc575415b4898f90429748b9e90f6974f0ca3c8488428c670abb
font_02_sfnt_off00013573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13573 10296 bytes
SHA-256: 198f575b091ff82d9c59d5baed0685280012d0147b7ff3939104a1f595b4227a

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