Malicious PDF — malware analysis report

Static analysis result for SHA-256 11a4a3c2fa101578…

MALICIOUS

PDF

67.4 KB Created: 2020-11-11 13:22:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8dff2fdc156f6f4020816ddf5b17ba02 SHA-1: 233a25509a988a523a8c7037e42938d86343b5ff SHA-256: 11a4a3c2fa101578a1cea240d8a3f3cc2de523bdbc452e6b6de20acad25940fe
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://trafftec.ru/123?keyword=coaguchek+xs+system+user+manual PDF link annotation
    • https://raminatu.weebly.com/uploads/1/3/4/5/134579417/9461187.pdfIn PDF document text
    • https://gilolubirej.weebly.com/uploads/1/3/4/3/134309297/sijedewisawemo.pdfIn PDF document text
    • https://xotiroxo.weebly.com/uploads/1/3/0/7/130776105/6277234.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/bd7d15e8-558a-4b21-a7d7-033cafdff51b/38352291878.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b9c57e4-7d8a-4eef-b1fa-494dc8cccf1b/3570847373.pdfIn PDF document text
    • https://s3.amazonaws.com/waxejajinigafu/10209092031.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4067fc30-d5ef-4fe5-96b8-8843c0b07515/21647989333.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0f3d4be-5992-4e83-9a73-782169bd8458/72096726214.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f3b298d-8e6b-41af-b7c9-cfc5d52c7739/tifizegumorisaxixivumu.pdfIn PDF document text
    • https://s3.amazonaws.com/xebareto/urban_chaos_riot_response_remake.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13082f73-a752-4545-a9db-06c196e65bdb/61254787319.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a43e6fb6-a43a-4f93-870f-234d030953f6/como_ganhar_na_mega_sena_hoje.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/curved_arrows_png.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBED1 5304 bytes
SHA-256: 4d052221ca0a094b522b4346a5c965794b17dc0541714b8f716548403765e494
font_01_sfnt_off0000d0c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C0 9968 bytes
SHA-256: 9d374a9402fe79e5069c110861d433355618899881c8de1dcad134da70f8602e
font_02_sfnt_off0000f2d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D9 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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