Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dabe05c544acf40…

MALICIOUS

PDF

85.6 KB Created: 2021-03-20 14:25:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14a063d3a830446b81f4efa04035da9a SHA-1: d4f00bb7cf7fe00be9e5d41db71d91e14200884d SHA-256: 1dabe05c544acf403948e57114fa4c5496919a81c2295307ddba756165f30c50
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Apush period 3 timeline'. No scripts were extracted from this sample, but the presence of external URIs and the overall detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://dafemum.ru/strik?utm_term=apush+period+3+timeline
    • http://casserlabs.xyz/13433884556ynrca.pdf
    • http://icub.tech/before_the_throne_of_god_above_selah_chordsz2xnj.pdf
    • http://casbah2point0.com/buongiorno_italiaijeik.pdf
    • http://psylath.com/18796806795nulr3.pdf
    • http://teaitalis.space/xafoduzizakusogobosojerhuxqh.pdf
    • http://linorusani.iblogger.org/tilazekonixopitudepegu.pdf
    • http://helplnstagramoffice.com/665767486219sfdz.pdf
    • http://rukozhop-guide.com/fallout_4_looks22fs2.pdf
    • http://goldenframecollision.com/portal_frame_analysis_examplehimqh.pdf
    • http://letgtma.bid/decolonizing_the_mind_ngugi_wa_thiongo_summary8nufd.pdf
    • http://djami.ru/sony_dsc-f717_memory_stick_compatibilityvbfbw.pdf
    • http://moscow-siberian-force.online/mcquay_microtech_ii_operation_manualiuf33.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://748e6e98-33e2-4bd1-95aa-01ea3505a154.filesusr.com/ugd/704f6c_feff93b485a543028b4a7442381bec08.pdf?index=true
    • https://uploads.strikinglycdn.com/files/ba7ab2e7-560a-4e93-8af7-d050750d55f4/whirlpool_refrigerator_service_call.pdf
    • https://1c437d0a-cccb-4a8a-93f1-39e0b5126915.filesusr.com/ugd/b91566_46d574fa6c8f44f79e257af2ece08dc0.pdf?index=true
    • https://2a4065d7-883d-43e8-a524-7ce9aa4b4e88.filesusr.com/ugd/ccb1c6_b6dc276f69d64d70b270f32e5b908a00.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e9618e3a-c3fd-433d-8b65-2cd3311dda92/la_leccion_de_august_resumen_personajes.pdf
    • http://xanokilil.rf.gd/30348304484.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4ae.bin
8e83920c7ec8bcd337a543634eaac762ffe01e08911ac83d4ec40386680b330c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4AE 5144 bytes
font_01_sfnt_off000105fb.bin
c0e39f44321a474cc328806e737293db5bfd2873d0430c567f64257ef24eb06f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105FB 1716 bytes
font_02_sfnt_off00010e86.bin
adb2af93ba9fcdb6cb57e66b51af68bcaa3b5c33bf81c5976a545a44a0fb3b85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E86 10684 bytes
font_03_sfnt_off00013325.bin
532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13325 16204 bytes

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