Malicious PDF — malware analysis report

Static analysis result for SHA-256 eccbde9f409479ea…

MALICIOUS

PDF

73.7 KB Created: 2021-02-06 11:26:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1e4bfd2541bfe8124159ca5343ff06df SHA-1: 2f3a21ce9ac26e5c4fe245287d6ecaf5def74afd SHA-256: eccbde9f409479eadd1e08fbd25f8381b81f0e3d832e58e34a8caf3c09ec7548
194 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=marino+faliero+byron+pdf In PDF document text
    • http://biweekamnf.com/sasamidewiruvafonisoperi24hph.pdfIn PDF document text
    • https://cdn.sqhk.co/jaruxabal/hghjfhb/87344070455.pdfIn PDF document text
    • http://idealsit.fun/teduzuvumwz.pdfIn PDF document text
    • https://cdn.sqhk.co/fovuxugo/jbrjaif/chickens_not_laying_eggs_in_summer.pdfIn PDF document text
    • https://cdn.sqhk.co/xabiximakef/bXhhgfg/8482070344.pdfIn PDF document text
    • https://cdn.sqhk.co/xurawupo/LTWhgM3/live_channels_on_peacock.pdfIn PDF document text
    • https://cdn.sqhk.co/besiwowegin/8Vgdjii/xuwixixeguvixalo.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/dotivaf/brlps_2019_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/adobe_acrobat_reader_standard_free.pdfIn PDF document text
    • http://minofadejewezup.rf.gd/internet_radio_player_android.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/bizivejepukazotisonagago.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/bleeping_computer_ccleaner.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/barbie_girl_song_free_320kbps.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/zitefid.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/49562523239.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_off0000e3ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3FF 5104 bytes
SHA-256: 36bf25c22c7473ddd800c630023a4752a45009c81cbe4e1e063657b25daadd83
font_01_sfnt_off0000f578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF578 10872 bytes
SHA-256: e98e5932ca872675c74d8530a46d833bb12b990778e317454d2d785276ab3089