Malicious PDF — malware analysis report

Static analysis result for SHA-256 07eb5e669d51e47c…

MALICIOUS

PDF

67.8 KB Created: 2021-03-14 10:57:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 332b5ddb4b1f34753bdd01723a698bca SHA-1: 981623e7d764e1bd09f7a1478560a580b0619a0e SHA-256: 07eb5e669d51e47c483b9ba4e92af94a37386dfcdd3fb07b943d3b031717b3b1
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the PDF structure itself is designed to redirect users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://kuzutuzo.ru/wix?keyword=ranch+view+middle+school+reviews PDF link annotation
    • http://gazizelasama.getenjoyment.net/wegimiwumomedufanaseza.pdfIn PDF document text
    • http://zanofijufitif.22web.org/stihl_024_av_super_parts_list.pdfIn PDF document text
    • https://cdn.sqhk.co/novigigexuxo/Zgdtehe/starfall_i_am_your_flag.pdfIn PDF document text
    • http://kawafopi.mygamesonline.org/uber_business_model_case_study.pdfIn PDF document text
    • https://cdn.sqhk.co/dutudovajud/7tgijdU/ice_cream_van_simulator_beta_codes.pdfIn PDF document text
    • http://sixesijilolun.mywebcommunity.org/61488997171.pdfIn PDF document text
    • http://kizefet.iblogger.org/69524809944.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ca3ec1ac-6ff7-4c8f-ae0f-86a30d86e335.filesusr.com/ugd/3615fb_d0092aa186b6420ea9395269d5cf06df.pdf?index=trueIn PDF document text
    • https://899154e9-876a-4ab4-94d5-c8ef2aed10f2.filesusr.com/ugd/dcf9ad_7a68eb6a1a954f1ba0391ac3bea1114e.pdf?index=trueIn PDF document text
    • http://bixozebaxikapos.atwebpages.com/2003_vw_jetta_owners_manual_free_download.pdfIn PDF document text
    • https://d89d6b52-6e76-4e18-bccb-bd7428cfddad.filesusr.com/ugd/02beb7_43cbc4a27c2e4e06b6518ca61d4283e9.pdf?index=trueIn PDF document text
    • https://493f174a-a540-412c-bacb-e5b7b26cbfcf.filesusr.com/ugd/95bb70_ef8de87ef00147799d2e22256e5aa508.pdf?index=trueIn PDF document text
    • https://e0eedba4-cf99-4c42-97f5-d3f9ae5832dd.filesusr.com/ugd/e36ea7_e5520a476f584bf6ab4fa5cb580bcf4e.pdf?index=trueIn PDF document text
    • http://xivegujox.epizy.com/zusepezuvodejos.pdfIn PDF document text
    • https://45f91bdd-2b68-4e60-ae2c-b14373ae5332.filesusr.com/ugd/0d089b_acdcef61da764de9b2c896890d18f589.pdf?index=trueIn PDF document text
    • https://5fa60de5-32ab-41ac-ba65-77330e21e623.filesusr.com/ugd/2e16aa_1e056db946364c5783cc0d2ce0d42c9f.pdf?index=trueIn PDF document text
    • http://bananamiw.rf.gd/wubatefabakuvame.pdfIn PDF document text
    • https://6762652a-e869-40f3-960d-1446d4066230.filesusr.com/ugd/55e6b1_00e5c92bd63d4f6694b99f93d9ab8024.pdf?index=trueIn PDF document text
    • https://625f08e2-3d8e-45b5-8e8c-b95d001c5c7c.filesusr.com/ugd/d94ae5_172c13cd537842e6840877b0447370bf.pdf?index=trueIn PDF document text
    • http://tizesabukabel.rf.gd/fujotijebamimemuturi.pdfIn PDF document text
    • https://0e818273-c791-4c7a-b20f-750474b78fe4.filesusr.com/ugd/362633_fbf0f75c806d47448bedba714f84a7a4.pdf?index=trueIn 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_off0000cbc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBC3 5340 bytes
SHA-256: 15f60808e19ada1770118a29aa22277b4227c975a5edee5b7a66522e28f2af6d
font_01_sfnt_off0000ddd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD3 10844 bytes
SHA-256: 2c76d6f98d1452f1ddd191086ba88333df25cb347b980019189c60d84a8e5a9f