Malicious PDF — malware analysis report

Static analysis result for SHA-256 56c2e8dedc15d50b…

MALICIOUS

PDF

107.2 KB Created: 2021-03-19 10:12:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 9d9e6d431f9c568dbb7cf55c792e2580 SHA-1: d99272813da01a90232fd37f40850fadf19da9b7 SHA-256: 56c2e8dedc15d50be5d0f64dee76f733d3958a834551a97f94c2446277e593b6
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or directing users to malicious content. The PDF structure also shows duplicate object bodies, which can sometimes be used to hide malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://gimoguvi.ru/aws?utm_term=funny+romantic+book+titles PDF link annotation
    • http://zomaragexavope.sportsontheweb.net/53727489098.pdfIn PDF document text
    • http://palaxofivuleduj.medianewsonline.com/30648199823.pdfIn PDF document text
    • http://buwubaled.mywebcommunity.org/12511006414.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414334/normal_60166a0733b50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460243/normal_602ba4dbbff66.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kuwitabetegipo.myartsonline.com/learn_python_3_the_hard_way_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/business_intelligence_carlo_vercellis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/770de3ad-9608-4a20-8cbe-15ce8c9b3785/easy_sight_singing_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/walt_disney_world_park_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ba39f20-5430-44b7-9b4a-4428b64d900d/disuteruzun.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/22735073980.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/maxda_brgschaftserklrung.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6410f2a9-bebd-4837-8a06-6947695fb9f6/ledejajeka.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/14230344254.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/87419317750.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/fepak.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/wheel_of_time_books_10-12.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/peduxezixoko.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/xoroxizuziga.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/fudesu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001455b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1455B 5204 bytes
SHA-256: be6f08bb7f3f1ce70cdccc78c7944e0262d2d441c429f43a1afde9483f98d61d
font_01_sfnt_off000156f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156F7 1936 bytes
SHA-256: 246569b5fd7226bd0ebf3c016de7ba0bf82e996896d660a08030b2af0a08efd3
font_02_sfnt_off00016038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16038 12024 bytes
SHA-256: 8da6d28d51edc51c84cc8435ddae51875416c043bc5a01721ac0393f2ed8cee8
font_03_sfnt_off0001882e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1882E 16060 bytes
SHA-256: d1a84ba8f0e4a827a048d387db8dd5dae3538f1c7e72415b16af587a9947cdc7

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