Malicious PDF — malware analysis report

Static analysis result for SHA-256 d48b3b61276b15c3…

MALICIOUS

PDF

87.6 KB Created: 2021-04-05 04:25:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6d1d44c70d52749f30b3ce373e0bbcc7 SHA-1: bd878c2714d09a7920c21a01fb26ebc5fd0c5631 SHA-256: d48b3b61276b15c3ce22c6ddfb04003361f427213e7c381ccbaa2f4b89a1132d
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 0.9992

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://zajinet.ru/strik?utm_term=seniors+fitness+programs+edmonton PDF link annotation
    • https://cdn.sqhk.co/vinikawikuve/TFzRhbB/tentacle_wars_2.pdfIn PDF document text
    • https://cdn.sqhk.co/fularulojoze/jchhjiR/mevoxutap.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/hhj2sjj/70678120657.pdfIn PDF document text
    • http://xatakafigudu.getenjoyment.net/dudotaw.pdfIn PDF document text
    • https://cdn.sqhk.co/bofozuto/hLXchcD/ice_cream_coloring_pages.pdfIn PDF document text
    • https://cdn.sqhk.co/naliwanik/pD7Rigj/boba_tea_open_now_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/kikolibub/jh37ihF/soporiseborosevugigo.pdfIn PDF document text
    • https://cdn.sqhk.co/zapimafe/Sjagihi/tukumuwij.pdfIn PDF document text
    • https://cdn.sqhk.co/legexere/Aja9hgb/19974657001.pdfIn PDF document text
    • http://gefalugajorifa.iblogger.org/quality_scorecard_template_excel.pdfIn PDF document text
    • https://cdn.sqhk.co/livatunozasu/ggekif7/reketuvozukesurubexoneno.pdfIn PDF document text
    • http://lexamopelezun.mywebcommunity.org/1508759681.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/drug_calculation_sample_exam.pdfIn PDF document text
    • https://cdn.sqhk.co/karelevo/JjiBeTf/guzemilesumog.pdfIn PDF document text
    • https://cdn.sqhk.co/pevelefotuve/HgdaRdf/zixokururijokevifagus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://temomuduzuba.epizy.com/kdigo_guidelines_ckd_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02179153-37a2-4ef3-aa9b-15c3fca115b2/63048165624.pdfIn PDF document text
    • http://tibamupebunod.atwebpages.com/29891175077.pdfIn PDF document text
    • http://mifofofavu.rf.gd/asymmetric_aldol_reaction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6e1a192-5760-4f2a-8987-6b3daa23b2a4/89100541913.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b035b99-1cb0-4f98-a0dc-3d40c5859cbe/the_challenge_inferno_3_episode_10.pdfIn PDF document text
    • http://xitugukunorijiw.rf.gd/jusojasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2b070a0-ee4c-4f5f-80b5-e044ca70f841/pitivujolobijo.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11785 5432 bytes
SHA-256: 3163b9744b470a3cf91fd8ab21495b0d6aa8ecff138ebe71a25a8ce6c1b14abe
font_01_sfnt_off000129e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129E8 11320 bytes
SHA-256: 2e2f3b28ad88ea04cea77303a112dbd56f88464a1e00817a948c1410fec72d10

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