Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c5ca2eacd2db5a1…

MALICIOUS

PDF

61.6 KB Created: 2020-11-16 15:20:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 003d8b9941791bfb0c51338fb348eb43 SHA-1: c577e018107b91228a1f44bd81de517199eeecec SHA-256: 2c5ca2eacd2db5a1af3610fa23a11d537b43360ac78a30643a3d2bc2289f4439
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is a strong indicator of malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafffe.ru/123?utm_term=kiwi+camp+dry+performance+fabric+protector PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418370/normal_5f9f3d6a5e45d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428035/normal_5fac4429676aa.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/jotizifime/glockstore_promo_code_november_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/rowixokesufew.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/37226013485.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/jowalo.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/devesidinok.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/cesc_online_bill_payment_receipt.pdfIn PDF document text
    • https://s3.amazonaws.com/taruzudov/russian_symbols_copy_and_paste.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d3b91d3-b5c8-4353-ac9f-3713ea86c494/wamirupu.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/pandaria_leveling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/liz_greene_astrology.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_off0000b19c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB19C 5396 bytes
SHA-256: 075814bc8a0eb051f0f7ff1418953366a50761d308bbb0550a9185e0446793bc
font_01_sfnt_off0000c3fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3FC 10644 bytes
SHA-256: 9c16aae73d65d98c580176603ff74bcf96443c944785385aa0f7a0f599484df5