Malicious PDF — malware analysis report

Static analysis result for SHA-256 bde7b79dd83dd4a5…

MALICIOUS

PDF

67.2 KB Created: 2021-02-22 00:31:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 88ddffc00c85f2852504d5a38f76abcb SHA-1: e6f667dd67992cde45c9d7dcf4e0853e66d13804 SHA-256: bde7b79dd83dd4a5515556a1993657ed3364a81fc657d5eb9480f6ed92538c9b
96 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL that mimics a search result, likely to trick users into clicking it. The document body is heavily obfuscated, but the presence of external URIs and the overall detection suggest it's designed to lead users to malicious content or download further malware.

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://seumenha.ru/123?utm_term=american+standard+acculink+error+79 PDF link annotation
    • https://cdn.sqhk.co/dadirowuj/jaHgcjd/zilefixuwojutabivutajet.pdfIn PDF document text
    • https://cdn.sqhk.co/pazakazagoz/71oZUEk/51558926395.pdfIn PDF document text
    • https://cdn.sqhk.co/gejupajo/ihie0hd/4x4_jam_hd_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/disegivoji/ggvjbgg/39510925328.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368989/normal_5fc5841ec85c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369174/normal_601db707b42a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373016/normal_6007646b57579.pdfIn PDF document text
    • https://cdn.sqhk.co/taxeseta/fhchaii/mujiwaxatikidakiwixo.pdfIn PDF document text
    • https://cdn.sqhk.co/vasinabew/hhfgcgf/nbc_sports_apple_tv_activate.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460944/normal_60192fcc78fef.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
    • http://kafuvaxuxele.epizy.com/jivugutabevososewub.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/37915483527.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_off0000bcb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCB9 5256 bytes
SHA-256: da628f2381a8ad8588a5db3920fe1b8a928147e448865c43c57f3415b39ae59b
font_01_sfnt_off0000ce76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE76 10300 bytes
SHA-256: ffe39fcd1d81aea26e4965a6a6d59d921a456aa8da9cd18fc76109ba43957c38
font_02_sfnt_off0000f1c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C5 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f