Malicious PDF — malware analysis report

Static analysis result for SHA-256 c62c589bc3518f83…

MALICIOUS

PDF

65.7 KB Created: 2020-11-19 09:30:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1bc1b5007a335d0848178aab9d476bab SHA-1: b9ac7ff1fdfdd5b4c5272cf1e4bd1a60f81b6649 SHA-256: c62c589bc3518f834e48b878b13f11597696b2054635bece9cd28a16c04d5437
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=cheesecake+speculoos+mascarpone+sans+cuisson PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420224/normal_5f96a54688327.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414847/normal_5f9e447921b9c.pdfIn PDF document text
    • https://jatilesaza.weebly.com/uploads/1/3/4/3/134316516/pizitububena.pdfIn PDF document text
    • https://fimetopim.weebly.com/uploads/1/3/4/3/134399480/45c9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366341/normal_5f8a158688cd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371497/normal_5f8a88e3d432a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f8708ba137b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368493/normal_5f8d8db8d62e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387931/normal_5f9604d4867a2.pdfIn PDF document text
    • https://sirawomaperuli.weebly.com/uploads/1/3/1/3/131398091/wovojojovisusukit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fatisake/45152731331.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42043b3a-109e-412b-b12b-cc65215b8005/xitifosebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e354cb0-8c6a-47e3-a3dc-4a22b0054d18/systems_analysis_and_design3A_an_object-oriented_approach_with_uml.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1361451-71f9-48eb-8425-fb94e4805fba/singer_sewing_machine_31-15_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/964aadad-59f8-4d60-a291-04a33ee1ce1e/atauzem_snav_sorular_ve_cevaplar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9ad093d-3d89-4860-a26c-ada8270595d3/26432565192.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_off0000c520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC520 5144 bytes
SHA-256: 42af93a0c0da598c0b7006daf7b32665bab3fda53f35bf40a781f395d36163cb
font_01_sfnt_off0000d66e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD66E 10460 bytes
SHA-256: 8a665894faf2e7a363689ddb96b857ed07f12c764a510bc9ef6ac874c20f2091

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