Malicious PDF — malware analysis report

Static analysis result for SHA-256 19aedeb8358c5882…

MALICIOUS

PDF

66.1 KB Created: 2020-12-25 17:01:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0965412e7aed90ac9873014a763da11a SHA-1: c291797dff7743e8af1247f24950d455fbffa78d SHA-256: 19aedeb8358c5882478a74f383cff833ab0b15e9616701ff8d62007a7f96cd58
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://traffking.ru/123?utm_term=tai+jiang+chinese+restaurant PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4426688/normal_5fca55a1277d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405193/normal_5fb004c89612f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401691/normal_5f919e6b4abe9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390071/normal_5f906c0f840a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476427/normal_5fe5667e46378.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412902/normal_5fe470162244f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368237/normal_5fb7566e27d03.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/d8275a7e-f05b-4ddc-8370-ea1c1ff2f9db/gezovevewefufop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd976a1a-c681-4ce1-b853-443d31bfeeba/wizard101_fishing_quests_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/943e4b99-8e5a-4604-9d02-f91e1d3e9a49/rezetexepabumagu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c84e7c5e-cd41-4388-8bee-418c3ffbd5d5/hesi_exit_exam_test_bank_2015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/337ea922-c2c2-4ee5-93d2-df6934df2119/maselatu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b99c1635-2b14-4ea5-be90-15e933359feb/42086778971.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_off0000c5d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5D9 5052 bytes
SHA-256: 7179b29b52b6ef3955b75e309079933392aa0fb7e09530038056b14390e95217
font_01_sfnt_off0000d708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD708 10700 bytes
SHA-256: 15729c5716ca00f433756459a0f2c9fb07e697075175f48a9739bf1df08bdcca

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