Malicious PDF — malware analysis report

Static analysis result for SHA-256 40edc7c426138114…

MALICIOUS

PDF

75.8 KB Created: 2021-03-02 19:42:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 00986cd26fc125ee0aa3f7a35aeaa1f2 SHA-1: 7337a7eaf8abe43658e9cd991e18d85db6bca03e SHA-256: 40edc7c426138114a8792c8f35b8141b92fb2b7840c397096cb54963ab6c4c6d
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 that contains an embedded URL pointing to a malicious domain, identified by both heuristics and a machine learning classifier as malicious. ClamAV also detected it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to a 'prayer guide', which is a common tactic 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://gimoguvi.ru/strik?utm_term=rosary+prayer+guide+with+litany+pdf PDF link annotation
    • https://cdn.sqhk.co/zidodovare/gihiWhj/traffic_run_game_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466391/normal_6012dd2b882d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393521/normal_6022543c2432e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379974/normal_600cb4061ef7b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479715/normal_5fdff2726d074.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377410/normal_6027a0e78f635.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368493/normal_5fc6aab9d04a8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384460/normal_5fdd9397b2e98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424997/normal_600370a4e5b00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417543/normal_5fd7bdfea0c1c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378608/normal_6002ee2115a73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480743/normal_603837a74c743.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://s3.amazonaws.com/gekojulog/30354719328.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/ciclo_alcanos_alquenos_y_alquinos.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/pasabasizowimifel.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/naruto_ninja_blazing_jp_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/91502262790.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/life_itself_piano_sheet_music.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD3C 5388 bytes
SHA-256: bbfad8404f9237a9b93260b43b9b013561e0f35cd5afbdd5ed01327285f3966f
font_01_sfnt_off0000efa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA4 10808 bytes
SHA-256: 9690208f818491bee953574293193b0ab5dc9e96373e1ec776d3f9911a68f4c6
font_02_sfnt_off000113ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113EA 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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