Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9504d3f57f987e0…

MALICIOUS

PDF

89.9 KB Created: 2021-04-04 06:02:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 95bd75cff2f6d1ce4061c91b37ab5a82 SHA-1: 9c00bc0d81c107f076904e0146639f1b3ca6ecc1 SHA-256: b9504d3f57f987e082cb842045933d8f53392c850a5d14a11eb7a22d606e56d0
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-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://fokemale.ru/strik?utm_term=resumen+del+cuento+llano+en+llamas+de+juan+rulfo PDF link annotation
    • https://cdn.sqhk.co/kojetozativ/gjflrXG/low_level_necromancer_5e_enemy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482216/normal_6044926ca4ca6.pdfIn PDF document text
    • https://cdn.sqhk.co/wemitupu/ggjc8bg/10070565011.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493579/normal_601b7ae8cb186.pdfIn PDF document text
    • http://seduvidaw.iblogger.org/70394712037.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzosexiwugu/jikggjf/50917826106.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426071/normal_602aad6c6c057.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373259/normal_5fed020fefac9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497081/normal_5fdffae685807.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/5c7e8ffb-abe0-48e8-8658-4af321dea87a/xokerenasigukemamolopa.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/bimafevomiladavilixo.pdfIn PDF document text
    • http://sasebuza.epizy.com/xalezanimuvoxavatike.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/94958082098.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f4e774d-f374-48f7-97dd-fd2eb0474652/lupavisira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3ea6617-cff8-4514-9906-6478d906c735/47254693013.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/free_nonprofit_business_plan_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/linux_for_beginners_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2088ea69-cbe6-4d82-8b3b-2787354d3c4c/16980082153.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/jeduzirefemomazoveri.pdfIn PDF document text
    • http://sowutafamewuben.rf.gd/xebugegobagasozupi.pdfIn PDF document text
    • http://zofududa.rf.gd/bye_gif_free.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 8

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_off00012144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12144 5248 bytes
SHA-256: 4402376ce840ad10607e8b66756add410216e1a14821d093557968ceb1682676
font_01_sfnt_off0001330e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1330E 11508 bytes
SHA-256: e6f57e341e880c1436ec19ee9cddcebf4e912af3dfc49b7448d865ab65d1222e

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