Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c66d2560d5f303b…

MALICIOUS

PDF

70.0 KB Created: 2020-12-07 10:43:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6495d2b372789935295c8aa72b12b0fc SHA-1: 98221950a789e90d5b2975cac69bfa7ce46d1487 SHA-256: 0c66d2560d5f303bbd8e01fd7dcbbe0b088e81db989f84d764260c83f96658e4
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://trafficel.ru/123?utm_term=george+donaldson+songs PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463824/normal_5fcbf9583fa9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369643/normal_5f8edd5768e21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444374/normal_5fc3589e5281e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375352/normal_5fc4fad4c9c5c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447278/normal_5fc80ddbc9e2e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492586/normal_5fc63cf5c0b33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418557/normal_5f972425d1090.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383300/normal_5fbd0000e826e.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/ad5e9593-bb4f-4c5f-889c-b5194b1df808/62421381759.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/caller_id_android_8.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/nekaxuwilizonebad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33252000-b56d-4667-a43b-ab38165359a8/goviwetivadij.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/road_reports_m42_north.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c99b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC99B 5024 bytes
SHA-256: 190b005519e8a4092610d6e6f271229daf6fb0a3c864f52042f767012b9185e9
font_01_sfnt_off0000dabb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDABB 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off0000e61f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE61F 10720 bytes
SHA-256: 25c926d0b5259e77c97d590acb53609820bf3ed1e77c8a4893705daf39467466

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