Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffed7bd996ca29b3…

MALICIOUS

PDF

95.1 KB Created: 2021-03-11 01:53:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: a53e97cf0db7f8d56e8998410c0a28c1 SHA-1: eeb3fa9988870af924bcfe059b8fa64d1f9c7fbb SHA-256: ffed7bd996ca29b3934c8bc9ba3684d783ab2b2411e1d21c4c59a1278756a566
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, appears to be related to search terms for a graphic novel, suggesting a lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/wix?keyword=kindred+graphic+novel+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376858/normal_6037f41636cfa.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwozavenu/jfiaib0/magic_powers_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/mumesimasozo/ATfAjdU/art_of_conquest_dark_horizon.pdfIn PDF document text
    • http://wumomotetidofe.getenjoyment.net/find_the_closest_dunkin_donuts_to_my_location.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423750/normal_602d013b4b874.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459062/normal_60150eb973bb8.pdfIn PDF document text
    • https://cdn.sqhk.co/bitowiso/igibyjd/mewalatatizopo.pdfIn PDF document text
    • https://cdn.sqhk.co/merebiwisux/ifsgfH4/26861174226.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/hogejcn/yes_we_coupon_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/vusutesilo/GhR53jc/motocross_beach_bike_stunt_racing_2018_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/Tjbaiaw/stick_war_2_order_empire_hacked.pdfIn PDF document text
    • https://cdn.sqhk.co/tegasipitif/EOhdiqw/gorillas_in_the_mist_book_summary.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/ypHyRhd/best_free_weather_radar_app_for_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/9ghlKa7/ketisizomekerivemero.pdfIn PDF document text
    • https://cdn.sqhk.co/tiluzegata/egjjcig/big_bang_racing_gameplay.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wurivuve/52032363903.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/ripirukovuxi.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/aieee_ka_full_form.pdfIn PDF document text
    • http://viwuwijagabote.myartsonline.com/juzasigiraxosanile.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/78019432861.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_off00012d38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D38 4976 bytes
SHA-256: 0734180ad22ec7372a62f13ce88c0fadc8aeaae13615a7e5515fe674597f2b80
font_01_sfnt_off00013e14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E14 10240 bytes
SHA-256: 3d37dc00a90f4f8af500a3eb553e246cd0b0eac1e3aef471de7fea790a5ec8cb
font_02_sfnt_off00016126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16126 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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