Malicious PDF — malware analysis report

Static analysis result for SHA-256 39b3ffeee43ed654…

MALICIOUS

PDF

218.2 KB Created: 2021-04-13 20:18:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b8126de5bf166d9c6c59843c02d8cf81 SHA-1: 2891e321b09f4374dda307c041c81bb479d014fe SHA-256: 39b3ffeee43ed65499731a2a491a7536ba786211930a27211f4d68693ff85bb0
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 0.9941

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://vilenefex.ru/strik?utm_term=berserk+manga+chapter+14 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410443/normal_5fe799889b500.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/iIggdih/gigaluwekawudizit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486215/normal_6044750e1f1a9.pdfIn PDF document text
    • http://polikarmonolit.ru/delonghi_ceramic_tower_heater_aldi5gmk2.pdfIn PDF document text
    • http://onatural.space/binder_dividers_bigger_than_sheet_protectorsvb4ne.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497697/normal_606b42f58097c.pdfIn PDF document text
    • https://cdn.sqhk.co/mekewufi/ggpjiUM/86483852218.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492278/normal_5fd6494fa8871.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480142/normal_6020991656cc4.pdfIn PDF document text
    • http://basiditdcf.space/zebra_zp_505_driver_fedexl4agj.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/d82fe53c768ff.pdfIn PDF document text
    • https://dorenezawux.weebly.com/uploads/1/3/5/3/135383086/zuvuvazut-banitug-venifepasu.pdfIn PDF document text
    • http://alcexpress3.xyz/the_secret_life_of_walter_mitty_book_vs_movien2lr3.pdfIn PDF document text
    • https://telogedibosujo.weebly.com/uploads/1/3/1/4/131438044/7221731.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374535/normal_600e0e023f6d1.pdfIn PDF document text
    • https://pesuwoleze.weebly.com/uploads/1/3/5/2/135295903/259a56f4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495837/normal_606ab5a2272b0.pdfIn PDF document text
    • https://sesirolomozanu.weebly.com/uploads/1/3/2/7/132741009/rowotawoboxupasowik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409102/normal_6032f8864f7e3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gopivikanofo.rf.gd/what_is_an_anti_inflammatory_diet_good_for.pdfIn PDF document text
    • http://gevitejivojo.rf.gd/59874823312.pdfIn PDF document text
    • http://jijetesak.rf.gd/buwukerekupedupo.pdfIn PDF document text
    • http://fujoxazasax.epizy.com/fundamentals_of_electrical_engineering.pdfIn PDF document text
    • http://laxakufas.epizy.com/qu_est_ce_que_l_agriculture_durable.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
stream_002_off00015d21.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x15D21 153356 bytes
SHA-256: d9137ea2b27059264a67ae2ba4b7ad792c67cdde087765567c5af012a42a8df5
font_01_sfnt_off00032341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32341 5568 bytes
SHA-256: b1b2d5288f806b73f9b5d89c7c6f92e2b2a544b55f253943683bb4cdee64ef8c
font_02_sfnt_off00033617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33617 11360 bytes
SHA-256: 9fe7e55f30f7f657cfeb5c74092cc73a4f8652d497c395e21478b461d4566a4e

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