Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc420ba724aeee1a…

MALICIOUS

PDF

67.9 KB Created: 2020-11-13 05:12:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2ab1ca3609b5de3a0a5bbe953e99f5fa SHA-1: 9240d578776c9cf9c983534d27d0a37e3dac9dc7 SHA-256: dc420ba724aeee1aea9fe3ab85dc7e873103c0df76defecb9b5431b8178cac89
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://traffnew.ru/aws?utm_term=excel+vba+save+sheet+as+tab+delimited PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413578/normal_5f9c295d30380.pdfIn PDF document text
    • https://gurogujanesoxub.weebly.com/uploads/1/3/4/5/134506981/zuwotupexi_noroki_gemoniluxodugub.pdfIn PDF document text
    • https://jezaxegare.weebly.com/uploads/1/3/1/3/131380636/074babd77ed31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366031/normal_5f9625cf68935.pdfIn PDF document text
    • https://polirafula.weebly.com/uploads/1/3/4/5/134528493/9f07f5f0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387925/normal_5fa3d9ce2538e.pdfIn PDF document text
    • https://mitixofixomu.weebly.com/uploads/1/3/4/3/134333727/kajugose_mirilizawev_wawomoge_tomajef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378406/normal_5f96486678568.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368750/normal_5f8cbaa025854.pdfIn PDF document text
    • https://fiwatinizajof.weebly.com/uploads/1/3/0/8/130874156/5762053.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368230/normal_5fa9e28287b58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388839/normal_5f9f336aa493f.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/f6cec9fa-9fcb-443b-ac2f-e5ad758b19af/sedarok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a67ae8a-f308-4dc9-a3db-ed4a0db0c9d1/12500611068.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5263fb4-0d5a-4ab0-89bb-51c8ac9a58a5/ruger_lcp_ii_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23c7b3d4-99ed-41cb-9e24-6707c180efd2/34026785780.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_off0000cb34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB34 5308 bytes
SHA-256: c5a719a38a083ba413aa88e5b58fd95bcc4e0db821b561ed4f67a97627d722a5
font_01_sfnt_off0000dd28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD28 11028 bytes
SHA-256: f3fd52e9a04f48086d9a3af87676600215279095c61d79518ac0efbaa14b7d14

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