Malicious PDF — malware analysis report

Static analysis result for SHA-256 ada82fcb74379217…

MALICIOUS

PDF

66.7 KB Created: 2021-06-10 14:54:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 26cd1fdef7b73f67eb9a8a66dd86f3df SHA-1: 55aedb1c58e8da6d70a5d048f24e4fda07f016a5 SHA-256: ada82fcb7437921700e1ca3278586339f5045c4b0fc7cbfe72710520fc1e3eca
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that points to a suspicious domain, likely used for phishing or to host further malicious content. The document body, though heavily obfuscated, appears to be a lure related to the embedded URL.

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://oniceh.ru/pbw?utm_term=juice+wrld+lean+wit+me+mp3 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4376875/normal_5fdef8d2ea998.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445864/normal_5fe6371dc3b4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407747/normal_600a8815a3dc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416512/normal_604400c59e579.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391899/normal_60650b512a93e.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4369504/normal_60b3c890dd3eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476002/normal_605fbd95f13f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368245/normal_5fdc5f36e8e90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406455/normal_602e1ab939fea.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/b86270b8-3057-4fff-b1a5-b711f7d1f487/lirokadudelifujemu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c3324e8-2dfd-4583-8d86-2b597c4fde6b/binopivubekikivalufupu.pdfIn PDF document text
    • http://molujox.pbworks.com/f/arya_2_movie_tamil_dubbed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a3fd89e-85d9-4a59-a4c2-1f1d84f3a4ef/44355486556.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/608ac4c6-3db3-4359-8b79-5d6b1f54466f/sistema_endocrino_como_esta_formado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c3251cf-00d4-4dcb-bd52-55610d689dcb/lean_visual_management_board_examples.pdfIn PDF document text
    • http://fepewuwakow.pbworks.com/w/file/fetch/144483825/sogex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f103516-3c57-4b93-8c94-0f21393610a6/are_exams_multiple_choice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74f38928-2e94-4fc8-b6d0-96ef8ac38acb/72600831583.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e206f7c-2d56-46bc-b43a-3a31a3d60e7c/15483726672.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b82b12d8-2814-4a56-9f92-70420c3f346b/9575926934.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c6b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6B1 5284 bytes
SHA-256: 305328827ff8089f85028b8f003ec97d1a53df7c63e1a61b1534c55d542576ed
font_01_sfnt_off0000d8a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A7 10344 bytes
SHA-256: c6eaca788769b2e74800d1dbc504d5c925a5ba5778246e78047072b7d308a07e

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