Malicious PDF — malware analysis report

Static analysis result for SHA-256 561605ef2e2b3f4d…

MALICIOUS

PDF

118.0 KB Created: 2021-03-28 15:40:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c492349bd83ed5ae2d5de9ede0beccb8 SHA-1: 8448ce2a3ad12c0f3f93acbaadfc29fd9725eb75 SHA-256: 561605ef2e2b3f4d0867ff9ee03751136fc1004f6d0ba3e9bad33492f2bcd2a8
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 0.9997

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://fokemale.ru/wix?keyword=daily+language+review+grade+4+week+22+answer+key PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409425/normal_5fd8af4a94237.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404108/normal_6049d783b598e.pdfIn PDF document text
    • http://tajumizigareni.iblogger.org/5532386563.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409114/normal_5fcc13055c690.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498330/normal_6053933b39e6b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446270/normal_5fcc8ef156622.pdfIn PDF document text
    • http://rajelakitapeki.iblogger.org/lcm_and_gcf_worksheet_grade_7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415531/normal_5fdbb6926efef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481539/normal_60337d13e1669.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486523/normal_605158ba99461.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/c3f3aee0-9836-41b6-8f0d-fc5dbb5f2d9c/wukigipavixotugobe.pdfIn PDF document text
    • http://runisinifozi.rf.gd/mikeserigoridudibix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/472b5700-4a74-4c10-8035-ced76721588b/tekokagubozu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcdd866c-49d1-4acc-be3d-bf19d8e6b083/wizards_and_warriors_pc_walkthrough.pdfIn PDF document text
    • http://savefativiluz.epizy.com/48762650439.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b104539-4809-4ba8-b711-73aab5aaebf5/states_of_matter_reading_passages_2nd_grade.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_off00018b5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18B5B 5532 bytes
SHA-256: 38eaa76c0e1e42a1d4020b4e3b696dc4c9069e1a61d3796ddd770cfd5c491c74
font_01_sfnt_off00019e6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19E6E 12976 bytes
SHA-256: 72d67bdaa069d4f637f3b622e6e902ba1106e4549e22785f5673366a6e23d298

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