Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0f670c71294e7a9…

MALICIOUS

PDF

73.7 KB Created: 2021-04-06 07:05:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51578dacb089207e967b8c071d05023b SHA-1: 74390cd4530cb64127bd6a3e0fa13630bafd223f SHA-256: b0f670c71294e7a970da29be3f1bf83dac62b2130ce87650745a0dfc830689eb
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, identified as a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF_URI heuristic points to a specific URL that is likely used to host a malicious payload or redirect the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=deed+poll+template
    • https://cdn.sqhk.co/gawagunikuw/hhcagh6/2885193668.pdf
    • http://vugekowuzujed.scienceontheweb.net/xuratozawelupigulasedax.pdf
    • https://cdn.sqhk.co/gutipefu/Hpgchcl/52540813655.pdf
    • http://rusewigojubilon.mygamesonline.org/38806800521.pdf
    • https://cdn-cms.f-static.net/uploads/4477162/normal_603635c9223e1.pdf
    • https://cdn.sqhk.co/madobeborozu/aieRjcL/samsung_family_hub_refrigerator_reviews_2019.pdf
    • http://rujawobezixevib.iblogger.org/nodixuxoviboxoz.pdf
    • http://bosemefawixuwov.mypressonline.com/25555687868.pdf
    • https://cdn-cms.f-static.net/uploads/4388815/normal_5fdb58322b766.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tujeviwakirawu/86874231712.pdf
    • https://uploads.strikinglycdn.com/files/db581ccf-1d09-4f9e-9b18-fb9c7a70a315/42537015268.pdf
    • http://naxepidibazugux.epizy.com/76317923978.pdf
    • https://s3.amazonaws.com/povodijirig/vadodara_weather_report_today.pdf
    • https://s3.amazonaws.com/saxefi/angular_5_format_date_example.pdf
    • http://sobogasitizi.epizy.com/nokavivesuterizikepejuw.pdf
    • https://uploads.strikinglycdn.com/files/f0c7512b-c854-417f-b265-45532276bc59/theseus_and_the_minotaur_statue_canova.pdf
    • http://zezewesiwakoruw.rf.gd/ray_stedman_adventuring_through_the_bible.pdf
    • https://s3.amazonaws.com/mixanaz/domugusesifomana.pdf
    • https://uploads.strikinglycdn.com/files/4b9eff01-597e-4ffc-8f7c-5ecf25198029/journey_to_the_center_of_the_earth_moviesflix.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e24c.bin
302afbd1d395d07cc43890c66649d86425d0895508acdb9384b969f637196c14
pdf-font-stream PDF embedded font (sfnt) at offset 0xE24C 4828 bytes
font_01_sfnt_off0000f2a8.bin
947d4f457d4d8705ee727f87cddb8e50ec4f9530066fa4b148b111010af9793e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A8 11128 bytes