Malicious PDF — malware analysis report

Static analysis result for SHA-256 f30fa70dbc0e09fa…

MALICIOUS

PDF

73.8 KB Created: 2021-02-18 16:19:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 574637289b2f82929527400318cab877 SHA-1: 7d2f4e496122e5f670a55cc23f6c3bf255f2b9a9 SHA-256: f30fa70dbc0e09fa94f1a3096b51669652fbbe71c932f2e4748754ec41b8d312
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is identified as malicious by ML classifiers and ClamAV, with heuristics indicating a browser installation lure. The embedded URL points to a suspicious domain, likely part of the attack chain. The document's content, though partially garbled, suggests a social engineering pretext to trick the user into a malicious action.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://jacksth.ru/strik?utm_term=how+to+download+music+from+spotify+to+mp3+for+free PDF link annotation
    • http://sarhello.online/89967644836jkhjj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476432/normal_5fcc228ce07d1.pdfIn PDF document text
    • http://smeshnoykir.space/witezufavasixadesab0e3mu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460970/normal_5fca3ee3b6570.pdfIn PDF document text
    • http://numberoone.xyz/text_bold_android_codewzrts.pdfIn PDF document text
    • http://mscredit.info/csw_study_guidedbhhj.pdfIn PDF document text
    • http://wumalazari.22web.org/19283981155.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/jobavo/5354230001.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/fobapukeselesebakokib.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/taxi_driver_game_free_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/kinetic_and_potential_energy_worksheet_physical_science.pdfIn PDF document text
    • http://tasefabomodewiv.epizy.com/pinemuxiges.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/kaliningrad_tourism_information_centre.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/pexisovojotibajibigu.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/26013471782.pdfIn PDF document text
    • http://tiworetaganufo.epizy.com/gisegozibitu.pdfIn PDF document text
    • http://mupevisad.epizy.com/44719846655.pdfIn PDF document text
    • http://gigisijopa.epizy.com/semisaf.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_off0000d4e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E0 5500 bytes
SHA-256: 738037db48449868fc6ecef67cfe826c836df97b92a3023203ea5b5a32c76064
font_01_sfnt_off0000e78b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78B 10556 bytes
SHA-256: 75be3c2fa008792cf074b58f461392879a7a04ce97749be68856a50497b0306d
font_02_sfnt_off00010bc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BC4 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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