Malicious PDF — malware analysis report

Static analysis result for SHA-256 488442d462a93c28…

MALICIOUS

PDF

73.0 KB Created: 2021-02-28 16:58:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d99896b5bcf8a78d0551cdf1afce1250 SHA-1: 0fb8018cc90e1561d81aa13eddc59122004c3a93 SHA-256: 488442d462a93c288a4a34a48179e3364401947b9d9d1946ee7fa10e5a8fbbed
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ponafet.ru/award?keyword=read+twilight+new+moon+online+free+pdf PDF link annotation
    • http://moneyindia.site/kapijabesasebivejuchela.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420597/normal_5fcaacfdcf294.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444884/normal_60237404a3cff.pdfIn PDF document text
    • http://nonly.xyz/order_of_operations_pemdas_worksheets_answer_keymcpbz.pdfIn PDF document text
    • http://fb-ig-copyright.com/aisa_koi_shot_nahi_hai_mp3_song_downvovxb.pdfIn PDF document text
    • https://cdn.sqhk.co/pixefavenar/gihcjjE/ninja_blender_blade_stuck.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496151/normal_5fdc25863d4f2.pdfIn PDF document text
    • http://legendarycraft.ru/34435256015qc2ck.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408335/normal_60046de23a514.pdfIn PDF document text
    • http://stassikorskyi.com/lsc_full_formc5fdp.pdfIn PDF document text
    • http://podarokinsta24.online/casio_g-shock_style_series_herrenuhr_ga-100cm-5aerbvqwg.pdfIn PDF document text
    • http://wide-mean.top/wepulakidurulalijoxefetjowmn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405208/normal_601d4cae7eb27.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/xutomoxu/67831410667.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/73966555624.pdfIn PDF document text
    • http://pexoroxijaseduj.rf.gd/bopixazofu.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/20593061915.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/37639545764.pdfIn PDF document text
    • http://saraxafizopib.rf.gd/32651594141.pdfIn PDF document text
    • http://vurorevebosexu.rf.gd/assets_and_liabilities_format_in_kannada.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_off0000e16f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE16F 5376 bytes
SHA-256: b89c37cca4122b3656e0ad6207a5650cd1bed61fbcba1799695aba98e26eca1b
font_01_sfnt_off0000f3a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A9 10220 bytes
SHA-256: 0228f29ed36fb1e9550be009b34d0ed257127aade846ece431c7fd110f20351f

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