Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cd82ea947d8c773…

MALICIOUS

PDF

78.1 KB Created: 2021-05-19 07:43:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7229b7ab2458d37c025d5089021ea568 SHA-1: 1c52392d13fa870775260f89ed60f9d0e4efa4d2 SHA-256: 4cd82ea947d8c7730e8fa472b28a94fee10632844d1879bbc0d922efc857285e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://soxebez.ru/strik?utm_term=what+is+dual+citizenship+meaning+in+hindi PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4406775/normal_605e1a9597e9b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483388/normal_60089bab02ad8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450419/normal_603af576d9e6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459926/normal_601b7f5a6452d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419846/normal_5ffd42706d762.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448357/normal_603f5820935d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481286/normal_5ff37ee6ad3c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416666/normal_601a219234661.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408321/normal_60130a6f3989e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370303/normal_6011fae4b010e.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/b5089496-2017-471f-aeac-264d9d9c3b25/53703432954.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58ecf2d5-d030-4c7a-8550-6bb48acdd9ca/79854289294.pdfIn PDF document text
    • http://jeneviwa.epizy.com/ebook_akuntansi_biaya_mulyadi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/009ff815-8f21-4122-8541-fba4ac3c9075/liburozevapaja.pdfIn PDF document text
    • http://zolefirujiwi.rf.gd/mebad.pdfIn PDF document text
    • http://pexevogawi.epizy.com/achilles_tendon_repair_rehab_exercises.pdfIn PDF document text
    • http://zefofipavefo.rf.gd/36161571045.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_off0000f2f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F9 5456 bytes
SHA-256: f56203c1540c21d8e13f827d6c3da7ffcf1af3f2894670dc3af2051deea6d0bf
font_01_sfnt_off00010578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10578 11456 bytes
SHA-256: 4a8dabdce394baf5bd00132a28126a4f21be2bccd00624379295418a839d68df

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