Malicious PDF — malware analysis report

Static analysis result for SHA-256 a17e304c2bc13559…

MALICIOUS

PDF

75.1 KB Created: 2021-02-09 16:48:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 44f21148451e7178e158acce9ee69dfe SHA-1: 27ac02648480c0f59c4b4149b01100a0c32f6ac5 SHA-256: a17e304c2bc135596cf05332a737e29c15d93107f56aaf96790cedb809f13df3
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • 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.
  • 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://jacksth.ru/aws?utm_term=alimentos+que+contienen+vitamina+b12+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392667/normal_6012175c8a776.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370264/normal_5ff2360999699.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497695/normal_600065b1676eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419633/normal_6004f518a00eb.pdfIn PDF document text
    • https://cdn.sqhk.co/zojoguxuban/z4uib8q/dungeon_survival_ios.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386366/normal_5fff0fe973c18.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/gjhfXjc/jaxovuxowikilodi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449789/normal_5fff2b67e629c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427793/normal_601f5a8aaa32e.pdfIn PDF document text
    • http://wesadozazizubus.iblogger.org/fur_elise_notes.pdfIn PDF document text
    • http://sozefavi.22web.org/call_tracking_app_free.pdfIn PDF document text
    • https://cdn.sqhk.co/vonezositixi/gaggha0/miguva.pdfIn PDF document text
    • https://cdn.sqhk.co/xizefonuma/fiaWjib/can_you_draw_lines_in_microsoft_word.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/LifShjl/87393127147.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tirevotijo.epizy.com/63808231536.pdfIn PDF document text
    • http://jasigobup.epizy.com/alex_s_adventures_in_numberland_free.pdfIn PDF document text
    • http://pelatid.epizy.com/blood_supply_of_heart.pdfIn PDF document text
    • http://butevagowug.epizy.com/lasagne_sheets_dough_recipe.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_off0000e3af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3AF 5704 bytes
SHA-256: 14ade1b9c3a1636709219b0ed5c1d1190a8943b2db7dcd4cc4cda6bb5aba3270
font_01_sfnt_off0000f720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF720 11840 bytes
SHA-256: 277b3b86b494f0becbdc6a422655179c785491e5a1c650af89eb22f3a3e932d3