Malicious PDF — malware analysis report

Static analysis result for SHA-256 d807766cbf1c3829…

MALICIOUS

PDF

74.9 KB Created: 2021-03-28 12:27:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 3f36f9ee4ac68c7182d60c28c869060a SHA-1: 5229ef806b2812ed9ba04e873019e3eb1ac48dec SHA-256: d807766cbf1c3829e50472d7f7dddfeb569f71b5b7f8ddcd5996c75f4b8dba99
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting an attempt to manipulate search engine results or redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the presence of numerous external links points towards a potential download or redirection mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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=budaya+politik+di+indonesia+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463262/normal_5fc74766e07a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386349/normal_5fc9165638fe1.pdfIn PDF document text
    • https://cdn.sqhk.co/kubepugemaki/bqggehj/secret_rare_pokemon_cards_gx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423166/normal_5fccbce347fe3.pdfIn PDF document text
    • https://cdn.sqhk.co/guwezasov/hdiggdb/abalone_game_strategy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409107/normal_6026f9db33d3c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449602/normal_5fcf2771a5cdb.pdfIn PDF document text
    • https://cdn.sqhk.co/kisudosus/hgih0n7/85944636135.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489615/normal_5fdd39850e9f2.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/hfidQ1A/goodreads_choice_awards_2019_romance.pdfIn PDF document text
    • https://cdn.sqhk.co/fasisela/4wThiii/dino_city_rampage_3ds_cia.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ripazek.epizy.com/nubatorunigudafofojavegew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fed13d5a-361a-42f6-a286-e3f3dbdaa7f6/firagaja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2082fbb-5027-44cb-9498-d0165bfcc394/wunusixasofamekokojez.pdfIn PDF document text
    • https://5053e88e-9e18-4719-890c-32a1cca0295d.filesusr.com/ugd/411503_d6f3bf9c47154aedb54c483cdf9e7abb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c0d4631-a7ba-41ef-9353-74020a605aeb/stock_charts_for_dummies.pdfIn PDF document text
    • http://misuxuji.rf.gd/ccproxy_for_windows_server_2012_r2.pdfIn PDF document text
    • https://4b0cdf75-2e42-4830-99f1-bbdbaec3f661.filesusr.com/ugd/891219_4e664d9c38e04c68a75f7a1ba7cac9b3.pdf?index=trueIn PDF document text
    • http://solatilexi.epizy.com/how_to_reset_samsung_xpress_printer.pdfIn PDF document text
    • http://benifolagalat.epizy.com/calendario_mensile_ottobre_2020.pdfIn PDF document text
    • https://883cd1dc-02d0-4059-8fa2-99201f92b631.filesusr.com/ugd/6166c9_eb211f71df8a45f1b9944f834bd40c57.pdf?index=trueIn 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_off0000ea98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA98 5156 bytes
SHA-256: 2ce5d5ee6f6f30687f92f4dce1b8975723d8d409d02d34cddb73131fb77da9b7
font_01_sfnt_off0000fc44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC44 9996 bytes
SHA-256: fd8e2aab098758a58455a25323b84d0b23f6f4e321b1eaa9d0079029d7752091

Open this report in the interactive analyzer, or submit your own file for analysis.