Malicious PDF — malware analysis report

Static analysis result for SHA-256 66e26ddbbf5ad44d…

MALICIOUS

PDF

71.4 KB Created: 2021-01-18 13:18:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: eeafd6a11b80b692fd1212949aef7af6 SHA-1: 33c7346348df2c303fcae906784d71466eb18246 SHA-256: 66e26ddbbf5ad44d42cf211c3c61d55c3bfcd901a5044427b9e391f0c254c826
254 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
  • 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.
  • 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.
  • 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://crophysi.ru/wb?keyword=capsicum%20rice%20padhus In PDF document text
    • https://static.s123-cdn-static.com/uploads/4464851/normal_5fde4fa3307dc.pdfIn PDF document text
    • https://jatilupek.weebly.com/uploads/1/3/4/4/134491857/638f8f6bd.pdfIn PDF document text
    • https://site-1168325.mozfiles.com/files/1168325/fujugobekamepozuwedutizo.pdfIn PDF document text
    • https://lufeziwupidel.weebly.com/uploads/1/3/5/3/135345985/918160b4db.pdfIn PDF document text
    • https://wisetigu.weebly.com/uploads/1/3/4/3/134357320/panezevaguxiwodasawi.pdfIn PDF document text
    • https://site-1177226.mozfiles.com/files/1177226/power_wheels_jurassic_world_racer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449170/normal_5ff94cd16f592.pdfIn PDF document text
    • https://xitukuwelup.weebly.com/uploads/1/3/4/3/134340625/6391395.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mekavebij.epizy.com/5089624679.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/86112223281.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/babul_shooter_game_app.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/6966037366.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/lozamibekotoguvetakuwar.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/12669298676.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/free_love_s_theme_barry_white.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_off0000da53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA53 5184 bytes
SHA-256: 1e8be8bbf3952c1621af0854eec91214b4b65887bc4ba2c12eece861630a94f9
font_01_sfnt_off0000ebbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBBF 10904 bytes
SHA-256: 8c0b6390dafc9de8318dd6e9eac64fc44b064611ce734d513929ec328a4e33b3

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