Malicious PDF — malware analysis report

Static analysis result for SHA-256 e898653ac9b76314…

MALICIOUS

PDF

75.2 KB Created: 2021-03-29 05:26:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ecec14b48212845119dfba7d385153a3 SHA-1: 5b8594373e2ea6a5422c7ea73b671de2af73bbe6 SHA-256: e898653ac9b76314aa0caf92ea7c4f3ba183d246d13a7d2ddb770f3af4324047
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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/wix?keyword=crucial+accountability+free+pdf PDF link annotation
    • https://cdn.sqhk.co/zowipitilo/nihFEl3/jiwano.pdfIn PDF document text
    • http://naturagrush.space/buchungsstze_erklrungjsliw.pdfIn PDF document text
    • https://cdn.sqhk.co/samanugutu/jhjgzgu/amnesia_pc_pt_br.pdfIn PDF document text
    • http://vykupavto54.ru/after_effects_cc_2017_free_templatesh9lsy.pdfIn PDF document text
    • https://cdn.sqhk.co/naludibeg/IjhjbKv/80856992245.pdfIn PDF document text
    • http://jekeluxuto.mywebcommunity.org/pretty_little_liars_book_set_australia.pdfIn PDF document text
    • http://xunopapazugatar.medianewsonline.com/10025396979.pdfIn PDF document text
    • https://cdn.sqhk.co/bajowekununa/g4hihf3/waste_management_jobs_hiring_near_me.pdfIn PDF document text
    • http://kalukawuwo.mygamesonline.org/5984342949.pdfIn PDF document text
    • http://didazema.mypressonline.com/balanitis_tratamiento_topico.pdfIn PDF document text
    • https://cdn.sqhk.co/zonelatu/icHieie/64664222740.pdfIn PDF document text
    • http://larebalin.mypressonline.com/83033244526.pdfIn PDF document text
    • http://sodalabs.pro/what_does_boast_mean_for_batsoixjq.pdfIn PDF document text
    • http://distornyup.site/80514423847ldg7l.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/c3c90e8a-e936-4436-ae8e-780cd456c356/dd_5e_new_races_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/307f4d52-a4e2-4aba-b8ad-2d50b40e7b1b/zeruvexisufupito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73e82528-87fb-4a22-9a22-c60e9cb1cec6/34988069768.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9dbcc66-d91b-4b68-a8dc-81224fe7750b/how_to_reset_maintenance_required_light_on_2002_honda_civic.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a30aee8d-2b19-4d06-a27b-28124b4439d8/putobewupe.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/ninisipopumosaxisagi.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/dutidim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4241b941-3fff-430d-a122-01ef2f57534a/nujobem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c3b2fd8-7918-43a7-b26e-53fd5a939b26/81025908954.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_off0000e835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE835 5120 bytes
SHA-256: d1126eab98d6cc35a4c464e2b0cdca251ec3c717b4a9d07097851d3cb2bcd1b7
font_01_sfnt_off0000f9ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9AE 11240 bytes
SHA-256: ae6f1865890908e3b0b7b59a39c977bcef58ffc2526ec14a98d259c00c5b1b97

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