Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b2dd4cda0357ae9…

MALICIOUS

PDF

91.1 KB Created: 2021-03-30 14:36:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 8eea5f85b38721eb30fad9f6649e6048 SHA-1: 23d1088a6fb306ab0f7f8e066a41b0d3c8056505 SHA-256: 0b2dd4cda0357ae91a803630f3619b3c19d89290c4ff073d47f96a343fa694da
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO poisoning tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware delivery. The embedded URLs are the primary indicators of compromise, directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://xezojetit.ru/strik?utm_term=evinrude+9.9+2+stroke+spark+plug PDF link annotation
    • https://nimudizovif.weebly.com/uploads/1/3/4/4/134478886/surufowulegerev_velitixo_vazagomibadujek_dikuwaxuzoguvi.pdfIn PDF document text
    • http://dejamorije.scienceontheweb.net/computer_architecture_and_organization_notes.pdfIn PDF document text
    • http://skidki-day.store/ciclo_de_krebs_definicionzcsd8.pdfIn PDF document text
    • https://dofewomal.weebly.com/uploads/1/3/4/5/134510420/9017557.pdfIn PDF document text
    • https://tedozumezefa.weebly.com/uploads/1/3/2/7/132740670/a7a0fdc27.pdfIn PDF document text
    • http://tesugujinarijag.mywebcommunity.org/behaviorism_and_social_learning_theory.pdfIn PDF document text
    • https://pufabakorulur.weebly.com/uploads/1/3/4/3/134320636/8325830.pdfIn PDF document text
    • http://cheatyou.site/wogovwr8dg.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • http://vuvulusigi.scienceontheweb.net/dobudosejikofa.pdfIn PDF document text
    • https://nelemiken.weebly.com/uploads/1/3/4/7/134704654/kasodogebedanu-zugulawuf-difenuzufosufaf.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://1bf92926-22d0-44a1-94fb-b51843c41cd5.filesusr.com/ugd/762c1a_73b6d5b81f2b4f7e84ebf6e8ada5ff74.pdf?index=trueIn PDF document text
    • https://3568c1c9-c281-4b9a-9ea9-d5d291e0176b.filesusr.com/ugd/e5d8db_b10ced19b21b4f6189773bb08a928f3f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6427f51f-4416-446c-a0b1-9dde9891e0d4/taurus_g2c_9mm_extended_magazine.pdfIn PDF document text
    • https://99ca13e2-8bf0-45b2-93fa-bbfb519f101f.filesusr.com/ugd/5392be_fcc6d7858fa343848029b69cf9f10df6.pdf?index=trueIn PDF document text
    • https://3e1ae61b-6b68-46dc-8a90-d1c7a5b9f91c.filesusr.com/ugd/b8bbd7_3de61b50a29f496ba48e258b3865fa54.pdf?index=trueIn PDF document text
    • https://2a403a33-5f6e-4534-96f9-742aa7325afc.filesusr.com/ugd/d2da83_6d2aa872d4cd4852b1c2c710d8e6d1b6.pdf?index=trueIn PDF document text
    • https://7d6e376e-1ee3-4df5-88c1-8d1511d419f8.filesusr.com/ugd/7dd30d_0e5f2bed1184461ea9876ec691276453.pdf?index=trueIn PDF document text
    • https://f3dcd8e3-6656-4b47-a81e-a993d3c4f2a1.filesusr.com/ugd/aa9ef2_30d69a7ac45f4de09ce77834449d73cd.pdf?index=trueIn PDF document text
    • https://041aa876-b65b-432c-96c0-58c8b295a4e4.filesusr.com/ugd/90d19e_afc1a18691b0427f818abbe560ddbdb6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ccd5190-e42a-4d37-88a6-b277cafe6b85/75685732933.pdfIn PDF document text
    • https://f7f2eb1f-4ce6-40bf-b337-6bcc2c9c1a95.filesusr.com/ugd/dc6899_47dd8faf95684aca928c31441bcbdae7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce6efa34-480c-443b-a234-9dfdac4c97e2/busemakurifefu.pdfIn PDF document text
    • https://27dd58ca-3bab-4825-b0a2-cb75a9f796de.filesusr.com/ugd/aba4c5_652c223d6f064e2d9427a82ae9abbab0.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001185f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1185F 5408 bytes
SHA-256: 97278bbd1458b033f063cd6d95b5829d5a94175ba0f621610fbb7fb6a284b31a
font_01_sfnt_off00012adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ADC 11216 bytes
SHA-256: 62e976c8dccbd1e353822ea94276efdf03cdbedd825c61b875704d69303315da
font_02_sfnt_off000150c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x150C0 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.