Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ff5d60b06845eb…

MALICIOUS

PDF

79.1 KB Created: 2021-03-09 10:23:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80ff1942c51b5171434776b8d485d741 SHA-1: 7626f3c6fac8b6f5a1a4b7a58747ef4f057d1918 SHA-256: f8ff5d60b06845eb1af14fa4268d261723dfb66353ba82d0cc5c761ae620ae7a
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to be related to a search query, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://midufefew.ru/aws?utm_term=what+does+e1+mean+on+relion+blood+pressure+monitor
    • https://cdn-cms.f-static.net/uploads/4393644/normal_601235ce7a667.pdf
    • http://dunizajo.66ghz.com/how_to_harvest_iceberg_lettuce.pdf
    • http://gowanenutik.mypressonline.com/dark_alliance_baldurs_gate_3.pdf
    • https://cdn.sqhk.co/feruwapusux/QgfdNX8/vertebrate_zoology_book.pdf
    • https://cdn-cms.f-static.net/uploads/4450242/normal_6032b4be11801.pdf
    • https://cdn.sqhk.co/bureruverog/0ievjgj/temple_run_2_download_apk_for_android.pdf
    • https://cdn-cms.f-static.net/uploads/4365542/normal_6012a91248be4.pdf
    • https://cdn-cms.f-static.net/uploads/4480897/normal_602adbe79b5f3.pdf
    • https://cdn-cms.f-static.net/uploads/4380539/normal_5fd71c49cce6c.pdf
    • https://cdn.sqhk.co/xedomobedusi/PgiyjjB/jilifubitibinojidamil.pdf
    • https://cdn-cms.f-static.net/uploads/4386361/normal_6039754bc8cdf.pdf
    • http://rafupofamurawaf.mygamesonline.org/common_french_expressions_idioms.pdf
    • http://vadosixajobirug.mygamesonline.org/panasonic_rice_cooker_inner_pan_replacement.pdf
    • https://cdn.sqhk.co/dusawugivepo/Xij2zhi/rokujaro.pdf
    • https://cdn-cms.f-static.net/uploads/4385413/normal_601cb622e53a8.pdf
    • http://pigozolifafaw.iblogger.org/betopode.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://dojorunubi.myartsonline.com/why_does_my_comfort_zone_heater_keep_turning_off.pdf
    • http://jotizepexul.epizy.com/liwuxekibazuku.pdf
    • https://uploads.strikinglycdn.com/files/258fbf90-fbab-4f47-a14f-e97719447abe/zarutikudirawobafifepalig.pdf
    • http://rususekobijo.myartsonline.com/how_to_clean_jenn_air_range_hood_filter.pdf
    • http://xugeseza.epizy.com/49568403765.pdf
    • https://uploads.strikinglycdn.com/files/0e8e2336-3b6a-4121-b943-ef19513131a6/82849064410.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9ab.bin
3b34af150f31f5d3483f4114ccfec7786f2eaf9bcc514159a6574e871f64d70e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AB 5284 bytes
font_01_sfnt_off0000fb82.bin
59560cc4acd69690119c2a368954d6274267514ff39d21ec0021241a4b10b288		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB82 10216 bytes
font_02_sfnt_off00011e83.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E83 4324 bytes

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