Malicious PDF — malware analysis report

Static analysis result for SHA-256 05f2394053897045…

MALICIOUS

PDF

66.8 KB Created: 2021-02-13 17:02:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e2f9fc977c0d8819d6bd2234ad981c56 SHA-1: b64b3184b08f0fba37e3a379478002ad093c743e SHA-256: 05f2394053897045caa1714dd961880a9c34212522ba99ed09d92b1dc267b2b1
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/wix?keyword=2009+audi+a4+b8+owners+manual+pdf PDF link annotation
    • https://xanusikufugab.weebly.com/uploads/1/3/4/3/134371049/772448.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467945/normal_5fe413092fdaa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407066/normal_5fe34258a0fc0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482020/normal_6001a954d1611.pdfIn PDF document text
    • https://jasezanita.weebly.com/uploads/1/3/1/6/131637239/kijadis.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/dalava/bodega_bay_fishing_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/62536493950.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/sweet_camera_photo_editor_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/star_wars_clarinet_sheet_music_beginner.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/sbi4u_biochemistry_unit_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/xiduwaxewuruv.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/80728056432.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/lagu_timur_tragedi_power_metal.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/slack_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/astro_vision_lifesign_horoscope_kannada_free.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_off0000c767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC767 6036 bytes
SHA-256: 7f34bd50ff6f7ecfede746033fb9e7cc963eb5ffdd7c2245e9a1755d5a81b788
font_01_sfnt_off0000dbe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE2 10152 bytes
SHA-256: c01aca6c124b5b40ceb959ad48fe3311545cf3d27423d0ac1520467e60580c1e