Malicious PDF — malware analysis report

Static analysis result for SHA-256 07a9378b6e86cdbd…

MALICIOUS

PDF

78.7 KB Created: 2021-03-06 16:09:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d62a9c679d75ca7976134c7f3e51310b SHA-1: 1f2a01fd995b082f175f993643f9b20d377446dc SHA-256: 07a9378b6e86cdbd209494f2764ed6ce3515b373fa25561533f4c2165a914620
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a significant number of external links, identified as a PDF_SEO_LINK_FARM heuristic, suggesting a malicious intent to direct users to potentially harmful websites. The ML classifier and ClamAV detection strongly indicate maliciousness, with ClamAV identifying it as a phishing trojan. While no scripts were explicitly extracted, the nature of the link farm and the embedded URLs point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://seumenha.ru/123?utm_term=what+is+tribal+religion PDF link annotation
    • https://zowololo.weebly.com/uploads/1/3/5/2/135294949/5029355ce88b.pdfIn PDF document text
    • https://rubosesizip.weebly.com/uploads/1/3/4/7/134744628/25564c71bf8ed2.pdfIn PDF document text
    • http://skywonder.space/chiringuito_blue_bar_formenteraormrq.pdfIn PDF document text
    • http://jolidulikan.scienceontheweb.net/kathryn_kuhlman_books_amazon.pdfIn PDF document text
    • http://anarchymedya.com/warifajisutuszemj.pdfIn PDF document text
    • http://momsmall.space/fallout_shelter_guide_androidlfs2c.pdfIn PDF document text
    • http://paktum.pro/informe_boletin_comercial_gratiselk4a.pdfIn PDF document text
    • http://euroshopmn.space/84438172503i7lrg.pdfIn PDF document text
    • https://jurujixomegisi.weebly.com/uploads/1/3/4/7/134745805/mitakedirosuxor_durobubaxav.pdfIn PDF document text
    • https://gogozofoful.weebly.com/uploads/1/3/4/5/134512065/7032415.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc4a979b-b725-4a40-9c47-8ed2d579c592/best_madden_20_playbooks_for_sim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76f460f6-535f-40a6-8acc-2887ccb7b8dc/55208268964.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/avengers_logo_hd_images.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/57080644684.pdfIn PDF document text
    • http://tuwutexo.onlinewebshop.net/one_of_us_is_lying_summary_chapter_20.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/kindergarten_curriculum_guidelines_2017.pdfIn PDF document text
    • http://firiwigisu.atwebpages.com/28707424006.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/amiibo_key_files.pdfIn PDF document text
    • http://sutexuvidag.myartsonline.com/o_come_to_the_altar_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/beeker_s_garage_gta_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd702dbf-28d6-4695-8eef-1fee148e254f/xeparororumixinejivalozab.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/12948354040.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A3 5100 bytes
SHA-256: b21892abe2cf51c7b3df9147a005ea8380f40e91b5802456f9df38543f7973f8
font_01_sfnt_off00010903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10903 10688 bytes
SHA-256: bce2fab0af0810efbe97e1aad7bdbab49a45a0e20928912c3c82e92e30900cab

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