Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f0b68fc7994132…

MALICIOUS

PDF

82.6 KB Created: 2021-05-23 05:48:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 8e3f05de703be050e4de13e911d329c3 SHA-1: cfd1fda580431ee3034391a763a08e495f4a822f SHA-256: 95f0b68fc799413260474c68fe63a7dadf9d7a529ce1d7159c08194649556c99
164 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external links, many of which are part of a link farm, and one prominent link points to 'fokemale.ru' with a query suggesting a download lure for 'gta v android'. The presence of a 'download button' heuristic further supports the phishing pretext. No scripts were extracted, but the overall structure and heuristics indicate a phishing attempt to trick users into downloading malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://fokemale.ru/strik?utm_term=gta+v+android+download+apk+%252B+obb+eb PDF link annotation
    • https://vigoxanumevu.weebly.com/uploads/1/3/4/4/134466257/dusujorodigun.pdfIn PDF document text
    • https://pugotadarasab.weebly.com/uploads/1/3/6/0/136094286/vumukatiludu.pdfIn PDF document text
    • https://xixolediz.weebly.com/uploads/1/3/4/5/134513169/320935.pdfIn PDF document text
    • https://xevibobi.weebly.com/uploads/1/3/4/6/134683071/5100467.pdfIn PDF document text
    • https://ninisajata.weebly.com/uploads/1/3/4/8/134869212/kasififisakob.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/dewazewokib/zugerukowo.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/administrao_financeira_hospitalar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b0a9031-0e52-4a4e-ae10-ee51d56c2098/mozajujujowum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98b3115c-c20c-407e-885b-ee6e357be695/dunkin_donuts_bottled_iced_coffee_nutrition_facts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/804f3d8e-2669-4024-ad4b-19361dd26d37/ahsoka_novel_canon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7bf8a10-b6cd-455f-8c44-e4575e0b86c1/transition_words_worksheet_3rd_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fed069ca-c279-48ac-9e5e-a69cb7783b0a/gojuwuk.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/92120764531.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/zuzemidakiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c14fc074-a19e-4e95-86d4-08188df783e0/rebelion_en_la_granja_pelicula_completa_en_espaol_latino_descargar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b416df1-89b1-4a90-8f40-4b263fb558ee/eclipse_phase_titans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/baeb7927-1725-41fa-afa9-33d811669922/runeberivuzaxadukepe.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/xizaxalopubavesolepivurif.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/digestive_system_test_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/vewosesemamedurevod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55fb1ead-e102-477f-a597-5378ea19309e/4795519950.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acadc259-e2fc-4d5a-8c7a-19ce638aeaef/35983034093.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/hair_and_beauty_application_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd010fd8-9d91-4fbc-a9f9-2012cdf8c338/13220844801.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.

FilenameKindSourceSize
font_00_sfnt_off0000f6df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DF 4948 bytes
SHA-256: 79f3080c9a01dbcf002295db1b3c0fb0f730fc1a449bba0299703b0f524880ea
font_01_sfnt_off000107d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D0 11824 bytes
SHA-256: 230fedd3f811331d135ef1f526fda6f00377062cc6841186472b13ceffd22fdc
font_02_sfnt_off00012ed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ED9 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f