Malicious PDF — malware analysis report

Static analysis result for SHA-256 7702e584b1b0410d…

MALICIOUS

PDF

66.7 KB Created: 2021-02-17 01:54:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6fdbbea4a7d01bc5af4ae09b7a128dcd SHA-1: 415cfb0061a45a02ca58db717bec2e270849919c SHA-256: 7702e584b1b0410d29ad21450c830a01a94fc9976eacf728f270d43ef59fadc3
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/wix?keyword=wileyplus+physics+solution+manual+organic+chemistry In PDF document text
    • https://static.s123-cdn-static.com/uploads/4409798/normal_5fe4956f56099.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426957/normal_60089f77c0501.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469836/normal_5ff91036eb5df.pdfIn PDF document text
    • https://cdn.sqhk.co/fokatekox/bwSjfhe/fireboy_and_watergirl_1_player_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/ripigopes/Jheihhj/16678030957.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390052/normal_60294b3fd8866.pdfIn PDF document text
    • https://cdn.sqhk.co/feduvefas/NhhRtZE/laxosodezixarejoxuluz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382189/normal_6005dd8d9ed80.pdfIn PDF document text
    • https://cdn.sqhk.co/lesebonun/g5heaaX/duck_shooting_hours_wisconsin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484834/normal_5fe1653f24bb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468838/normal_5fda7aeb77cac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501479/normal_5ff3cd81a118f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367667/normal_5fee269b779c6.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/vavabi/dofopapovemap.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/7365403151.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_off0000c9bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9BD 5464 bytes
SHA-256: 014ae95d077a71af982b22914184ed6e0cc5ce4c3312a6f481bd594768b1a2d0
font_01_sfnt_off0000dc33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC33 9896 bytes
SHA-256: 6adabf827393df7c49290995bc8175e1eca784d62bc1dca9950fc3d4ffe7d198