Malicious PDF — malware analysis report

Static analysis result for SHA-256 e26694ac31ad0efd…

MALICIOUS

PDF

74.2 KB Created: 2020-11-18 06:47:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 965126a2e67bce3fb39f3623c6b7cd0b SHA-1: 1635dcab63e0c0ef006c2ba7b2f0037734166a97 SHA-256: e26694ac31ad0efd54dff552f853eeadaf048fb14a9c70c0b4d8a364a3a1aa36
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a site offering 'king root apk download'. This strongly suggests a phishing or social engineering attack aimed at tricking users into downloading potentially unwanted or malicious applications. The ML classifier and ClamAV detection further corroborate the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffi.ru/123?utm_term=king+root+apk+download+4.4.4 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460045/normal_5fa2c0fd98e56.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tuxutedi/14862193810.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/73501705009.pdfIn PDF document text
    • https://s3.amazonaws.com/newopetusam/league_of_legends_item_guide_ashe.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/ego_syntonic_personality_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/86898895118.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/shadow_hills_high_school_football_schedule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c3ec25d-972b-43c2-800f-aecfc1d2f79a/owners_manual_for_coleman_roadtrip_lxe_grill.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/18494224555.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/988f2e42-3781-4914-b33c-bca403f13c6f/19442239383.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7d8da1c-5e43-4023-9209-aea9dfe6f794/75512449961.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/harbor_freight_tools_largo_fl.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/hypertension_treatment.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/xezem.pdfIn PDF document text
    • https://s3.amazonaws.com/pusumowi/janopigi.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/firudumawez.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E2 4864 bytes
SHA-256: a664ce4f722481f0944a234de0cf8a7f677551c9aeca246f3ba1d922b969fe38
font_01_sfnt_off0000e982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE982 10896 bytes
SHA-256: 79efb71f2d6157718daa73714bec0f92af0c2ccb4488dd2c20a2b2cb3212df1f
font_02_sfnt_off00010df8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF8 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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