Malicious PDF — malware analysis report

Static analysis result for SHA-256 7302b792122e1470…

MALICIOUS

PDF

77.0 KB Created: 2021-03-11 10:25:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 157c5967dc6564590b4833c03025265d SHA-1: b5c039f381fff58e461739cf6e6e3d6488a1071c SHA-256: 7302b792122e1470b87e200a1f5d4f555958275c6e6744063fadaf435caf3f3f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external URLs, with one identified as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wix?keyword=ap+stat+study+guide+pdf PDF link annotation
    • http://kolekewoni.mywebcommunity.org/compound_interest_worksheet_gcse.pdfIn PDF document text
    • http://prizinsta365.website/what_are_the_rules_of_game_of_life7nqn1.pdfIn PDF document text
    • http://wavarev.22web.org/naxebawuvoluvexumele.pdfIn PDF document text
    • http://medakijizu.22web.org/grid-_template_columns_repeat.pdfIn PDF document text
    • http://dipenoguzel.sportsontheweb.net/best_security_certifications_2020.pdfIn PDF document text
    • https://favesalaliba.weebly.com/uploads/1/3/1/3/131384568/3633740.pdfIn PDF document text
    • http://doxisolawasusig.66ghz.com/don_best_injury_report.pdfIn PDF document text
    • http://copyright-services-us.com/renuzagedalobonokaac1ot.pdfIn PDF document text
    • https://rugalasaludazi.weebly.com/uploads/1/3/4/6/134683923/058f775.pdfIn PDF document text
    • https://fesoviso.weebly.com/uploads/1/3/4/7/134710514/6938904.pdfIn PDF document text
    • http://tulomodev.getenjoyment.net/67876339117.pdfIn PDF document text
    • https://tapizijivuvol.weebly.com/uploads/1/3/2/6/132696465/4ee7334ea25.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tosego/36697155415.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/xanodebuxinosiwifedi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cddc44a-b22c-4f61-b2ee-64ffc7a3eb48/66125687799.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d4d4861-6a53-463b-970b-6760dd5eb662/lowrance_hook_5_hdi_price.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/26013883631.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51c1652b-a47e-4675-9aa4-d9fd8f495a2f/6532898509.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/concise_pediatrics.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_off0000f120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF120 5172 bytes
SHA-256: 739b92c63dadce786137dff6c24181e52e0f06d500a69807e6054b5e72e25fad
font_01_sfnt_off000102e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E5 10532 bytes
SHA-256: 0fbf8138f5ab44a22c20c016c3ba1727b4f809b4ae232b3193f6394e05171610

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