Malicious PDF — malware analysis report

Static analysis result for SHA-256 c947991a3c4739be…

MALICIOUS

PDF

93.2 KB Created: 2021-05-22 01:25:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 0a74f16a30b82736482384a1400326b8 SHA-1: 27da55e245b92432c77b33acc15d3b77812ea885 SHA-256: c947991a3c4739be5f0962667371baf0fc0c6abfb2408c50a1e2284c05d14db2
104 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 ClamAV detection name indicating it's a phishing trojan. The embedded URL, 'https://midufefew.ru/strik?utm_term=40+day+40th+day+death+anniversary+printable+40+days+prayer+for+the+faithful+departed', is likely used to deliver a secondary payload or redirect to a phishing site. The document body, though heavily obfuscated, contains text related to a death anniversary, suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://midufefew.ru/strik?utm_term=40+day+40th+day+death+anniversary+printable+40+days+prayer+for+the+faithful+departed PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4444882/normal_6021541313093.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459935/normal_60268255b871b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407301/normal_5fc68e2cb0fc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470016/normal_602d1dfce5548.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446649/normal_5ff0761d99bf2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450356/normal_5fcc09c4255a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383446/normal_5fd68b3c1f137.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460071/normal_604b0110d4685.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449178/normal_603902934146d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443814/normal_5fcaad1a2aecc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379029/normal_602a7571672c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384828/normal_60275804107da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383912/normal_5ffd424203fe0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393022/normal_5fd85ecfae3ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490364/normal_5fe114676e793.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/nisoxow/aptoide_apk_windows_8.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/paas_aao_na_free_s.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_off00012cd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CD2 5568 bytes
SHA-256: d0777220eed1631de5eb050bb4aee0140e744da4d1cc7efbdaeab07279ad17ad
font_01_sfnt_off00013fc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FC6 11468 bytes
SHA-256: 2a362a0f1e0bdc4ada7dd591af27ff180dc29f364e0a8a4bca3548fc60ab76d5

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