Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad0befe85774ca43…

MALICIOUS

PDF

84.4 KB Created: 2021-04-01 01:32:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e0204cd51f56de8ba57b6aa80d07051 SHA-1: 671fbe43da941d9e51638474497b9144faf6cd1f SHA-256: ad0befe85774ca43f9118216ec16117dd9febee479f17554d4f95556d0c5fc73
156 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious phishing document and part of a link farm. It embeds a URL that appears to be a lure for movie downloads, which in turn leads to a PDF link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=fantastic+beasts+full+movie+in+hindi+dubbed+download+filmyzilla
    • https://cdn-cms.f-static.net/uploads/4382186/normal_5fdacbc52d2ea.pdf
    • https://cdn-cms.f-static.net/uploads/4457014/normal_6013dbfb5c560.pdf
    • https://static.s123-cdn-static.com/uploads/4393508/normal_5ffffa1771bb9.pdf
    • https://xeziguga.weebly.com/uploads/1/3/5/3/135392729/remubo-wizukowor-vegedusadatepaf-likavesategawag.pdf
    • https://someradajisifu.weebly.com/uploads/1/3/4/6/134669983/d4c35b9d22.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2e4137d0-f503-4307-92a3-903a1bee01f6/jaroxulomukidutuletulib.pdf
    • https://uploads.strikinglycdn.com/files/32d1f02e-ec8e-4c5d-8cd5-2efd5cc5b57a/43185136379.pdf
    • https://uploads.strikinglycdn.com/files/9f1dfd18-b264-49b6-9ffc-ca8ce01ea1b2/is_disneyland_staying_closed_until_2021.pdf
    • https://s3.amazonaws.com/tuxutedi/wezulapudorazularaned.pdf
    • https://uploads.strikinglycdn.com/files/a3845805-a8b7-4c94-84bd-eac7f4631dd3/1997_mercury_225_efi_weight.pdf
    • https://uploads.strikinglycdn.com/files/cec1da2f-09e3-403d-a3de-65f3d271e178/lights_out_summer_tour_2019_chase_hudson.pdf
    • https://uploads.strikinglycdn.com/files/a153655a-7bf4-4301-9f23-5ddf3a447a29/lamateganajegazer.pdf
    • https://uploads.strikinglycdn.com/files/2d584759-9ac0-43ac-9fb1-d60932ad976f/what_is_needed_for_final_inspection.pdf
    • https://s3.amazonaws.com/pidufozu/pusodisakeluren.pdf
    • https://uploads.strikinglycdn.com/files/ea2ab366-f8c0-4914-85ab-da79741a8ebb/76406724985.pdf
    • https://s3.amazonaws.com/bomifabipi/manual_de_organizacion_y_funciones_de_una_empresa_industrial.pdf
    • https://uploads.strikinglycdn.com/files/91c622a7-d9ae-455a-b194-ab49479f4c5f/what_is_tropic_of_cancer_class_9.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_off00010985.bin
28d8310f44784f3e215600bb53cdffecf461cce5f8bc519a7d9fd2ccbdc9b72d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10985 5564 bytes
font_01_sfnt_off00011c75.bin
705ee2ca08fc2b9f3ab00abfa367ccc07f761db684ae7abc5d2f1fb6e1302273		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C75 11572 bytes

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