Malicious PDF — malware analysis report

Static analysis result for SHA-256 0448c1dc11fb0ca5…

MALICIOUS

PDF

96.6 KB Created: 2021-02-12 18:35:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 82345d9294ae9c7ca368aaf24eb5e728 SHA-1: 6181b48f639e17af3b5ebaba0050269e33b5be33 SHA-256: 0448c1dc11fb0ca5fe17aca30b72f6b4412b0dcb627faca532ca6126ab38cf0c
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to 'https://maypoin.ru/123?utm_term=ragnarok+online+forge+blacksmith+guide', suggesting a lure to a potentially malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/123?utm_term=ragnarok+online+forge+blacksmith+guide PDF link annotation
    • https://cdn.sqhk.co/pifonode/hjW5Hpa/mupofaki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479223/normal_601b0f22210c8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484114/normal_5fca5b5520d43.pdfIn PDF document text
    • https://cdn.sqhk.co/toromerepowa/gZifxK1/king_s_raid_characters_ranking.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417312/normal_6001cc766d597.pdfIn PDF document text
    • https://cdn.sqhk.co/wudawagirus/iegiqek/3975504531.pdfIn PDF document text
    • https://cdn.sqhk.co/letijefa/khbBjid/jepaladanisaxawu.pdfIn PDF document text
    • https://cdn.sqhk.co/vawadawuleja/igp3Hjb/79344216927.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/dw0hfjb/3818452231.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/hfjdcFe/jbl_link_10_amazon_music.pdfIn PDF document text
    • https://cdn.sqhk.co/tumosirewuw/jcHhbL8/fantasy_ice_cream_factory_tour.pdfIn PDF document text
    • https://cdn.sqhk.co/gabunufu/jcBjDjg/cycling_speedometer_apple_watch.pdfIn PDF document text
    • https://cdn.sqhk.co/rizonozugaj/d5iaKWg/garonapogo.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/Xtjb9Lq/love_app_download_telugu.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/mekonulegipero/nalowanaxozirino.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/elixir_syntax_guide.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_off00013bdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BDC 5648 bytes
SHA-256: b788da9519caf38a0a7ca8e916e8fcdae637b96e187306e43ffeb7161c6cb697
font_01_sfnt_off00014ef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EF1 11116 bytes
SHA-256: 4a41df2eeb7087bfe4a15382ab1883545a91cb0c3feccc1debc2b361b035b02b

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