Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ba2d984237f9c4e…

MALICIOUS

PDF

68.1 KB Created: 2020-12-22 20:49:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 331f0364604dab5b5761018135fc24ba SHA-1: ca20dc53fcbc8d84fec5c008b5d38fd6a2f9f2cd SHA-256: 8ba2d984237f9c4e2e2ca9d5e29686440de64d2d1d7e4aa07b9e73b2ed093139
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 leading to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, possibly for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/123?utm_term=ff14+culinarian+leveling+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368488/normal_5fc0f3de400bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463812/normal_5fe110cfe55b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489057/normal_5faf6f8eb17fb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wajibile/jurawedaposisijutu.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/xavozijenuradusitopa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10afc403f5353fd968892/t/5fc6570b1972c46e3c76e00e/1606833936102/bowutubekigewagodi.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/examples_of_consonance_figure_of_speech.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d2703ea-9856-4d08-a6a3-0e9059c88caf/83779100871.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0078111f6a4198480da42/t/5fc1ad433c6ccf69f39d150a/1606528323654/coral_reef_webquest_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/degerutisig/godudizebawibezevu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d9e0c08-1145-4b13-9d40-eb72d97b1a2e/hacks_for_krunker.io.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5aed588c99b6d37c7fd7d/t/5fd60a74481cfa31adbdc83d/1607862904811/88935162162.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC08 5168 bytes
SHA-256: 41395ff2022bf72c86c29706f3c85282a0ecb59390377afb616361eedb62dc82
font_01_sfnt_off0000ddc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC6 11220 bytes
SHA-256: 5bbf63af4c516a19f3cc32215c7d245a66da465d0f9d151280084adfca1b6046