Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfd0b805258e4faf…

MALICIOUS

PDF

70.9 KB Created: 2020-11-19 03:44:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8d3a949d6cf6ac03e63dee836cec9cec SHA-1: 254d710444a374cb35701a90b9d1bb902c7f419b SHA-256: dfd0b805258e4faf98d49ec6058b370c5afc54632e289791020230fd66f1c400
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document flagged by ClamAV as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'trafffi.ru', which is a strong indicator of malicious intent. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of an external URI in a PDF is a common technique for phishing or malware delivery.

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=no+soy+perfecta+pero+te+amo PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368777/normal_5f87c3499e9c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367916/normal_5f87c2318429b.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/a28e7c3f-d184-4718-9167-dcc628a9eef6/33132003226.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/jutavakonevudevopijuzomi.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/60278882662.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/surah_ayatul_kursi_bangla.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c692169-4aec-4c30-9790-753b70cae616/barna_trends_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/23964036745.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/faduwemisebixexusan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abd77634-3ea9-4356-bd4a-f1f8bbee5f16/jpay_app_download_for_amazon_tablet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3b06c4f-4c38-4d04-b7e0-623c9ef6a4d7/acid_pro_4_keygen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7861367-f1f2-4f4b-9af6-f87afe7b20f4/enthiran_2_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/arabic_english_dictionary_hans_wehr.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c2fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2FB 5200 bytes
SHA-256: 6cdad657c5b7a94e02f4b2c42b1d30fb91d44e95e698347170b50148f391618f
font_01_sfnt_off0000d4a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A7 10292 bytes
SHA-256: b4a988d118d97ebd33f6f3e76b6c94bf8c630dc6eb82d35464500949a951626c
font_02_sfnt_off0000f62c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF62C 16820 bytes
SHA-256: d3aeeaabe7dc0d776aba0bb4098ca224b205961dd19c3e58d599bb66d145339d

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