Malicious PDF — malware analysis report

Static analysis result for SHA-256 c506fc0886bbce97…

MALICIOUS

PDF

76.9 KB Created: 2021-03-28 00:50:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: f02c5f82392c2b5b348d12c4d559ba75 SHA-1: 109ef50746a2f2da47e4aff5d47a2f80e33d5175 SHA-256: c506fc0886bbce97037bb64cf05ca54a60b96e85f47486f12725997e2513fc16
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to updating Android, directing the user to a malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the document's deceptive content suggest it's designed to trick users into downloading further malware or visiting phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://bologen.ru/123?utm_term=atualizar+android+8.+0 PDF link annotation
    • http://figejewumoposes.getenjoyment.net/algebra_and_trigonometry_graphs_and_models_6th_edition.pdfIn PDF document text
    • http://italiahot.space/777063000497r5zb.pdfIn PDF document text
    • https://vulabomanuxuw.weebly.com/uploads/1/3/4/8/134857085/jagobalixidebiloso.pdfIn PDF document text
    • http://ketaton.mywebcommunity.org/naval_architecture_free_download.pdfIn PDF document text
    • http://lifeshop.pro/gafafudekozikbsrpm.pdfIn PDF document text
    • http://italylife.pro/abc_instalaciones_electricas_residenciales603rn.pdfIn PDF document text
    • https://duvozogol.weebly.com/uploads/1/3/5/3/135314926/masesagaveva.pdfIn PDF document text
    • http://pevojatinolotej.22web.org/types_of_internet_advertising.pdfIn PDF document text
    • https://xafukulirodut.weebly.com/uploads/1/3/1/3/131379356/4243936.pdfIn PDF document text
    • http://sodahq.pro/information_technology_jobs_dallas8om7o.pdfIn PDF document text
    • http://makamar.online/mazapemujaxobuniberoylo0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nifiloxoburufi.rf.gd/guided_reading_and_dra_correlation_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/lonely_screen_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/street_fighter_5_characters_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/bittorrent_free_for_android.pdfIn PDF document text
    • http://mijitililifi.epizy.com/87371604206.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/walori.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dda80a0c-1e6d-44df-b725-d2240a75e4b3/sewagaxafer.pdfIn PDF document text
    • http://bewegemoketofa.rf.gd/capnography_waveforms_rebreathing.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/photography_gift_certificate_template_photoshop_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e9fb833-1287-46f0-ad98-80f6774fac68/lajusoxawarisakod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cc6abc2-825c-4a0b-94a3-d69e3cf1521e/hp_deskjet_960c_series_software_downloads.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a28a4a87-a00d-4ced-9557-ae77672ed7f3/75788098921.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08a251fd-203f-422a-a245-7cb0bb3715e5/60342116183.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_off0000ec4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4C 5048 bytes
SHA-256: 34350b8287d0e9c0fb65100f5d6b4b3d58b4eead0d35f216f7b4cf0952701582
font_01_sfnt_off0000fd8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8A 12504 bytes
SHA-256: 99e1b3fde7ed383d046a04b2b9e7e40a91dbb2343663785ce83f8d9581a2c569

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