Malicious PDF — malware analysis report

Static analysis result for SHA-256 26ca20496a280055…

MALICIOUS

PDF

65.8 KB Created: 2020-11-24 14:37:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a0be249483b50a5f4021122031b3b2fb SHA-1: 1438e6dd6156129185a02dec9371f062a52ab470 SHA-256: 26ca20496a280055836c4d00ae3c7efbf22921a4ed31a2e172f8db0e49d7c128
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, https://traffnew.ru/strik?utm_term=bulldog+cafe+in+sweeny+texas, is likely used to redirect the user to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to exploit users through a malicious link, consistent with spearphishing.

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://traffnew.ru/strik?utm_term=bulldog+cafe+in+sweeny+texas PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4427811/normal_5fb44c794e5fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409122/normal_5f9933a7bcd14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407302/normal_5fb944ef1dc37.pdfIn PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/c6e4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461204/normal_5fac141d843a2.pdfIn PDF document text
    • https://mizitixas.weebly.com/uploads/1/3/4/5/134589849/rapaleranux.pdfIn PDF document text
    • https://tanaxigurav.weebly.com/uploads/1/3/4/2/134266775/5476235.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://uploads.strikinglycdn.com/files/8e99aa58-b830-41cf-bd5a-0554fb8e4c58/iams_puppy_chow_feeding_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/319d8f4e-a21f-4990-80dd-70306047dd28/aprender_vocabulario_ingles_por_tema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a392284c-9d6b-4770-b824-58c0c932c8dc/conan_exiles_cracked_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52819373-49fa-4420-a491-1ebfb53b4148/m_audio_xponent_driver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaed9f88-3d7b-49c4-8f94-e1199252c2e4/52242325641.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_off0000b44c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB44C 5284 bytes
SHA-256: 8068752c827d98bde5fdfc1acb8024938cc2562a702056af0788d65386e07c57
font_01_sfnt_off0000c67b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC67B 10856 bytes
SHA-256: 375f8b9fa3c9342fd8e3fd3dded35c54f12cc1d825906215d858aeda94099358
font_02_sfnt_off0000eac3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC3 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

Open this report in the interactive analyzer, or submit your own file for analysis.