Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ce1159470b3e3c4…

MALICIOUS

PDF

78.3 KB Created: 2021-04-06 03:15:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 149eacde79b720190853fedd0df794a7 SHA-1: b7aa4f4ae45ae789d4e2d18fc5bb0200e95e5dab SHA-256: 0ce1159470b3e3c4f246a0eb2fca5d1b4c7cc89f3437132e294bfaa57db2f46c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/aws?utm_term=que+son+medios+de+transporte+terrestre+para+ni%25C3%25B1os PDF link annotation
    • https://cdn.sqhk.co/dibirolinu/jgqgivH/xibizozeseralab.pdfIn PDF document text
    • http://bestplacefor.rest/17797093817a9lx4.pdfIn PDF document text
    • http://kaforij.22web.org/java_core_volume_1.pdfIn PDF document text
    • http://miiliioner.xyz/nedufurexubiy1ymi.pdfIn PDF document text
    • http://pijakonojimuw.iblogger.org/36325491361.pdfIn PDF document text
    • http://ouily.xyz/saxofay0s4j.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/movibatunamewebemaduku.pdfIn PDF document text
    • http://bejuzoz.iblogger.org/35028832662.pdfIn PDF document text
    • https://cdn.sqhk.co/viforoge/gfgifEO/wifi_drivers_mac.pdfIn PDF document text
    • http://wamuwosola.mygamesonline.org/88563295597.pdfIn PDF document text
    • http://pegiwikepideke.iblogger.org/atomic_structure_and_the_periodic_table_notes.pdfIn PDF document text
    • http://vowitufafuzebil.scienceontheweb.net/komplikasi_angina_pectoris.pdfIn PDF document text
    • http://smm-target.ru/html_anchorzpweb.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/cf0c953f-d2ea-477f-a11a-523694b11d52/innova_3020d_how_to_use.pdfIn PDF document text
    • http://gezexibubaju.rf.gd/bivukezabodimupemolow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8a24740-280f-46cb-9915-b99b2dd9ac4a/how_many_calories_in_a_soft_beef_taco_from_taco_bell.pdfIn PDF document text
    • http://mezomiwewelebe.epizy.com/95697593401.pdfIn PDF document text
    • http://vadibezodaxilez.rf.gd/zumoxegekubuv.pdfIn PDF document text
    • http://pamiwumewamem.epizy.com/isobar_clinical_handover_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee3858ee-1437-4939-b33e-06b59b65eb0e/11197001149.pdfIn PDF document text
    • http://mipivazub.epizy.com/penonif.pdfIn PDF document text
    • http://fufudaloxola.onlinewebshop.net/vileba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0da5964c-9233-4117-ad00-67bdebab45ed/supply_chain_management_salary_in_south_africa.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_off0000ef93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF93 5344 bytes
SHA-256: 00d9ce2834792c4e31670336bd1c54db48290a67dedd9c264d1ff88b6f26f1a5
font_01_sfnt_off0001015f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1015F 12008 bytes
SHA-256: 80eab3189fb49712576018d924a9d715ba802fbbc38345d8efd4a97347d7e725

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