Malicious PDF — malware analysis report

Static analysis result for SHA-256 8005e8cc8c43875f…

MALICIOUS

PDF

72.3 KB Created: 2021-02-10 10:18:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7cf04af22ca74ef9856b9caf12c41b64 SHA-1: a16967691bbf4f1efd5a4eb37e8cd1b56b9b0dac SHA-256: 8005e8cc8c43875f911a7ab7d6d1d540df6d35153133fa8c6700018a55ffd6e2
196 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
  • 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/aws?utm_term=garment+quarter+size+guide PDF link annotation
    • https://zokilare.weebly.com/uploads/1/3/4/7/134767859/1726072.pdfIn PDF document text
    • http://study-english-05.site/nijisamamegalelunx1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418575/normal_5fdee38c8da4b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498882/normal_5fcaab3c05c37.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444351/normal_5fe3b1f5e0e70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452624/normal_5fe980b50b6fc.pdfIn PDF document text
    • http://silkhfig.bid/80055827451k09pr.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/lefemijip/londonderry_air_sheet_music_c_major.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/audacity_crack_version.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/army_love_story_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/instagram_design_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/78910694240.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/limutodazuwa.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/saucony_guide_iso_trail_review.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/lovely_baby_image_hd.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_off0000dc14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC14 5320 bytes
SHA-256: 5e6480c2d919b3724187a5862646a48b0a31a9ed882e8a7c4b11fa8c30ed882f
font_01_sfnt_off0000ee10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE10 11656 bytes
SHA-256: 9144764de78f303374beea4974cb6153033200052465ea4bfe8f62bc8860e6a5