Malicious PDF — malware analysis report

Static analysis result for SHA-256 511a9de1ddd76abe…

MALICIOUS

PDF

73.1 KB Created: 2021-03-06 15:09:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cba7b8ea076483b7240a3cc402c3e877 SHA-1: 11c215e6d7e784a0650f47c45e35423cee4da791 SHA-256: 511a9de1ddd76abe5d5db5718db89dd775e8c4e2e1e400213bffcd44b136c342
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xezojetit.ru/award?keyword=the+little+prince+book+movie PDF link annotation
    • https://widosutolitidaf.weebly.com/uploads/1/3/4/8/134847614/kafuzi-lijov-daxin-ximutisi.pdfIn PDF document text
    • http://julivojurukumu.sportsontheweb.net/sowigemelososexuzuj.pdfIn PDF document text
    • https://salupoxegiras.weebly.com/uploads/1/3/5/9/135961269/c6b23e1.pdfIn PDF document text
    • https://cdn.sqhk.co/zezegawutogu/UgjOjj3/83540411634.pdfIn PDF document text
    • https://zolowokixo.weebly.com/uploads/1/3/0/7/130738875/0f927a59.pdfIn PDF document text
    • https://cdn.sqhk.co/dekaroku/dhifjgO/clipless_mountain_bike_shoes_for_wide_feet.pdfIn PDF document text
    • https://zunejafeg.weebly.com/uploads/1/3/4/3/134382709/367311.pdfIn PDF document text
    • https://bilagezapa.weebly.com/uploads/1/3/1/1/131163658/1229914.pdfIn PDF document text
    • http://bosemefawixuwov.mypressonline.com/duzazuvafupumika.pdfIn PDF document text
    • https://muruvarulem.weebly.com/uploads/1/3/1/4/131406835/mujode_xotutupibuwor.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/3bde2db0-2a51-4fc9-9719-3f044039a53c/50297016809.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b912ca79-fc40-4818-9640-c6813010e176/best_way_to_use_herbal_clean_ultra_eliminex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ba70d00-40ab-4d3b-9eeb-df31e031bf0d/zusekusufumunilurarozito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24def4d0-c77f-46de-b6e1-a90bdd77bd62/52846409676.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d8366eb-ad8d-4502-8e2d-51702865b3b1/40714581573.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cf635f7-5425-4582-bee0-e6cf90efc3ee/casio_wk_6600_review.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_off0000e2a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A9 4996 bytes
SHA-256: ad00bb77d69f44c634c900e66a6218e97442c907679605bd70c02872ffbbbb4b
font_01_sfnt_off0000f385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF385 10428 bytes
SHA-256: db2b904870dffa4e2fb8d17229c2fcaf83af0066ccca55146d431b82126e28ab

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