Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c289f899816bddf…

MALICIOUS

PDF

74.0 KB Created: 2021-03-17 02:28:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d58e836f67d88f585d0b88d22b95f78 SHA-1: ff03d2b162bf6e923a500c9ebdb7819d51b11b18 SHA-256: 8c289f899816bddf15acd5d2cda3a8e9306a52ab1b221d597c2781b7e2566c49
104 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI pointing to a suspicious domain, which is also listed as an IOC. The ML classifier and ClamAV detection strongly suggest malicious intent, likely a phishing lure for movie downloads. No scripts were extracted, but the presence of an embedded URL and the overall detection profile point to a phishing or malware distribution attempt.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=kickass+download+movies
    • http://wonitudigugejut.iblogger.org/hoover_dual_power_max_pet_carpet_cleaner_fh51001_manual.pdf
    • https://leditolovon.weebly.com/uploads/1/3/2/6/132682688/vasatukirikofadepi.pdf
    • https://xijegubusogo.weebly.com/uploads/1/3/0/7/130739006/kaguxazelerepibided.pdf
    • https://rizofuruw.weebly.com/uploads/1/3/0/8/130873790/5452574.pdf
    • https://dekitinuro.weebly.com/uploads/1/3/4/8/134871397/woxemop.pdf
    • https://muwalivom.weebly.com/uploads/1/3/2/6/132695892/xebewekex.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3c17dfd0-c44f-43f7-8ee2-c1689814aed2/89701042370.pdf
    • https://cf2e1f24-e5f1-4289-9567-3affce9c164e.filesusr.com/ugd/a4ea6c_fccdcb5be8214fd3a0809f3485be5636.pdf?index=true
    • https://uploads.strikinglycdn.com/files/5a6a308b-590a-42b6-89d5-3dd40992a02b/xomutojakon.pdf
    • https://uploads.strikinglycdn.com/files/5e802ce3-2781-4fdd-b5da-960fe02ed179/65450873784.pdf
    • https://uploads.strikinglycdn.com/files/88a66cd2-bd2d-4764-9c61-7f023a92a1a9/didirukoderujoto.pdf
    • https://uploads.strikinglycdn.com/files/f4080ee1-8a78-4b9c-9516-f4a6359e40df/maytag_3000_series_washer_problems.pdf
    • https://6ba7316d-b84b-4ccb-a32a-103c856d4013.filesusr.com/ugd/91f37e_7251eef416544cacb7924368846fc9fe.pdf?index=true
    • https://s3.amazonaws.com/davolazupivowi/15849675161.pdf
    • https://s3.amazonaws.com/gowebabuxogiro/76933204841.pdf
    • https://s3.amazonaws.com/tojazudibumogab/ben_10_android_game_apk.pdf
    • http://validexa.epizy.com/6083232540.pdf
    • https://uploads.strikinglycdn.com/files/2e6e4fae-c181-4f0e-a53e-63a2428bc975/gelesa.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_off0000e600.bin
969bfd735cbad9f0da9b83b821564f8a95d487cee39eff8d9cbcb813f7e4ae56		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE600 5172 bytes
font_01_sfnt_off0000f7a6.bin
aa9444dab00de8ded986ffa4e8f1dd8e106d7671e1cfa5e5f3906e3e4bd72052		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A6 10764 bytes

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