Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce7f9cc99e8eaef6…

MALICIOUS

PDF

74.4 KB Created: 2021-03-16 03:42:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 05106f4bf2fd05c64bf263f0d1c21928 SHA-1: b098f5e09461dc9147451ecf901a5ef7d53142ba SHA-256: ce7f9cc99e8eaef63c3d1670148146f23eebd1f57738a5d278958bee4fac2bec
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The primary malicious URL identified is https://baarspo.ru/wix?keyword=gingerbread+person+outline.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://baarspo.ru/wix?keyword=gingerbread+person+outline PDF link annotation
    • https://cdn.sqhk.co/fusajovogi/MifHifg/7928462593.pdfIn PDF document text
    • https://cdn.sqhk.co/madufuxenuw/0ifQRa5/dank_tanks_mod_apk.pdfIn PDF document text
    • https://fuwupizur.weebly.com/uploads/1/3/5/3/135390256/dafuw_zegudobanag.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/ahdjjX9/40771160116.pdfIn PDF document text
    • https://juwalonivegab.weebly.com/uploads/1/3/5/3/135309433/6cf0ba4c550c66.pdfIn PDF document text
    • https://cdn.sqhk.co/rizavoxaje/hbdG4gc/venus_fly_trap_winter_care_uk.pdfIn PDF document text
    • https://tutemedoz.weebly.com/uploads/1/3/2/8/132814241/lirujawatorag.pdfIn PDF document text
    • https://tidoxanarapora.weebly.com/uploads/1/3/2/7/132710787/160f63432993.pdfIn PDF document text
    • https://lefizedut.weebly.com/uploads/1/3/2/6/132681647/3044017.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7e6b698e-d56f-4a21-8c48-787e2f6d39f4.filesusr.com/ugd/7836c9_4851f829e9ff434cb18adddd9130021d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3834dc81-2118-4c5c-827b-73a9867114ac/98091756155.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/jabigubafizapijexekubage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce7fb8ab-c2c9-43e7-b788-957161271adb/mizizafisabututa.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/lofitek.pdfIn PDF document text
    • https://75a697d3-84f0-44cf-bab9-f05e37020c50.filesusr.com/ugd/7c3584_44d682161d6a41278afd422782d64732.pdf?index=trueIn PDF document text
    • https://6762652a-e869-40f3-960d-1446d4066230.filesusr.com/ugd/55e6b1_d557443de3ce4979bd88a2d975b22dd1.pdf?index=trueIn PDF document text
    • https://d4f1f58f-bd44-402a-a4b0-a3aa01e36dbf.filesusr.com/ugd/dffefa_46df0756b19247c49dce87bffe0eaab0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lekezaru/company_profile_template_photoshop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d5b1c88-bc6c-4ec3-a2c5-1d10e840e938/pulgadas_a_milimetros_en_fontaneria.pdfIn PDF document text
    • https://45f91bdd-2b68-4e60-ae2c-b14373ae5332.filesusr.com/ugd/0d089b_e51cbca837704fdcaa806027faf384f5.pdf?index=trueIn PDF document text
    • https://044e8d80-c429-4a1f-820d-9b443c65b389.filesusr.com/ugd/53c654_cc8fd0c35ea7468ab64b4bb3d4691670.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/betfair_apk_app.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e60c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE60C 5300 bytes
SHA-256: 308be21171d342923b3a23adfab0395c7d98b8c12e190fce6f48361fbca5162e
font_01_sfnt_off0000f81a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF81A 10476 bytes
SHA-256: 646e47104dcdf169dbe6547599d0f42738c48d800b914d13c450a7b72c1d780c