Malicious PDF — malware analysis report

Static analysis result for SHA-256 62ea04232a5e42f9…

MALICIOUS

PDF

80.3 KB Created: 2021-04-05 04:20:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: cbcb9422a55c11cdf9a1d42ed6f22b7f SHA-1: 8c83228b18f5c0a9f2f9642ec0844f3d2478ba45 SHA-256: 62ea04232a5e42f9105637a3571df45f4dedfd5c987718158064be613e139089
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/award?keyword=italic+calligraphy+practice+sheets+pdf+free PDF link annotation
    • https://cdn.sqhk.co/pozedezupase/h2Whhhg/free_hd_wallpapers_for_iphone_7.pdfIn PDF document text
    • http://lajafago.medianewsonline.com/fuwaja.pdfIn PDF document text
    • http://ribavid.medianewsonline.com/garmin_gps_126_12_channel.pdfIn PDF document text
    • https://cdn.sqhk.co/letaziseb/gcidij8/53407816581.pdfIn PDF document text
    • https://pibusabet.weebly.com/uploads/1/3/4/6/134695111/xabufoze.pdfIn PDF document text
    • http://kojijeku.mygamesonline.org/90551113997.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503584/normal_60291bd254feb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414696/normal_5ff444cfd0e31.pdfIn PDF document text
    • https://cdn.sqhk.co/jukusenefow/AnXgcfh/long_coffin_nails_press_on.pdfIn PDF document text
    • https://cdn.sqhk.co/lekusovu/bighgQB/84030072656.pdfIn PDF document text
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/3850590.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409110/normal_602842d00a331.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457849/normal_602fdbd1273ac.pdfIn PDF document text
    • https://cdn.sqhk.co/darojopul/ysgdw6e/dungeon_keeper_gold_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fusajovogi/kifa9In/laledexowibirozidaf.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/1ohHuNx/nick_carter_masked_singer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417040/normal_60635e2ed37ee.pdfIn PDF document text
    • http://rowomonug.mywebcommunity.org/ligazivapuboded.pdfIn PDF document text
    • http://kafofal.mygamesonline.org/logitech_harmony_300_universal_remote_control.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bifovigavij.myartsonline.com/what_are_cultural_values.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eaf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF2 4004 bytes
SHA-256: ff40142865bc794058c0de4d8bbc9bc0b7cd71688a0beb914f0135a14ccf3de8
font_01_sfnt_off0000f91d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91D 5456 bytes
SHA-256: c7e81d3788fcf2f3adfe942e00590a4bc1dcf100896c5eb3eaf47e899a42fe2c
font_02_sfnt_off00010bad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BAD 12372 bytes
SHA-256: 698062157ffce36dfe36d2de9497fbfdbe1a0b19f6d5c82369d3e8ca40d10901

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