Malicious PDF — malware analysis report

Static analysis result for SHA-256 51748596e8cf15fa…

MALICIOUS

PDF

64.0 KB Created: 2021-02-23 14:07:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1f82ac518496b92c94604d8cb1ecb29d SHA-1: d8141690d4c1d06774ddfd95d35dff06822d40d8 SHA-256: 51748596e8cf15fac37e3530d67b5d541225e9c53673563ee87f4b478944d1d8
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

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 0.8600

Heuristics 4

  • 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
  • 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://maypoin.ru/strik?utm_term=how+to+replace+kitchenaid+oven+control+panel PDF link annotation
    • http://zarabotok.space/upkar_movie_audio_song7uyqv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467273/normal_5fc84c6f5c846.pdfIn PDF document text
    • http://sis-paypal.com/vewubatebaruxokorafesuval3cbp.pdfIn PDF document text
    • http://devlp.design/mazuzavedinvga33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444885/normal_5fd62402b1233.pdfIn PDF document text
    • http://boxidodo.22web.org/keuntungan_menjadi_local_guide_di_google_maps.pdfIn PDF document text
    • http://buyfastedcircle.xyz/6271851112lf4o8.pdfIn PDF document text
    • http://pepesox.22web.org/cello_suite_no._1_bach.pdfIn PDF document text
    • http://static-get.top/tixozopawolenulowis6ev1p.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.website/imagine_dragons_smoke_mirrors_limited_super_deluxe_editionka4wk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393900/normal_5fd0d8243a101.pdfIn PDF document text
    • http://nadahul.ru/xuxozelp8rqx.pdfIn PDF document text
    • http://prognoz-football.club/1530804727369jj8.pdfIn PDF document text
    • http://indohealth365.online/chaar_sahibzaade_a_video_songqtedc.pdfIn PDF document text
    • https://cdn.sqhk.co/silutoge/egiT4K7/word_family_stories_and_activities.pdfIn PDF document text
    • http://eslivdrug.space/91042120877men3c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dotizedulowej.rf.gd/pefuvimulenogivizetiwugi.pdfIn PDF document text
    • http://tawaxinazaka.rf.gd/minimum_spanning_tree_questions_and_answers.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C1 4948 bytes
SHA-256: 8fd07b28959da2fbece14653af949b0246cec573cf094adf5a0374c622805213

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