Malicious PDF — malware analysis report

Static analysis result for SHA-256 31aea7110d2c0b6b…

MALICIOUS

PDF

72.7 KB Created: 2021-02-25 11:10:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d0965c741802f2d073aa51727bfcff94 SHA-1: d4ab76b0787b9bcbac61e1cb5841245ad848d3f8 SHA-256: 31aea7110d2c0b6bbcffee768cc210f01df7dd4c8ce789451e13f38b18dfefbd
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://leonvi.ru/wix?keyword=swcs+infinite+campus PDF link annotation
    • https://cdn.sqhk.co/muwazubivotu/AgeaieO/fuzurewus.pdfIn PDF document text
    • https://zegekeli.weebly.com/uploads/1/3/4/6/134616407/seroleba_gagibunag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366015/normal_5fde16a37753f.pdfIn PDF document text
    • https://badikixokatapi.weebly.com/uploads/1/3/0/7/130739740/pibakasevefana-zawefaxejabade.pdfIn PDF document text
    • https://gurekageta.weebly.com/uploads/1/3/2/6/132695257/tikuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402501/normal_5fd9110bc7b53.pdfIn PDF document text
    • https://wovupidej.weebly.com/uploads/1/3/4/6/134687137/mopuxexifepus.pdfIn PDF document text
    • http://naxiramomamaz.66ghz.com/80232614957.pdfIn PDF document text
    • https://kewakovek.weebly.com/uploads/1/3/4/4/134467638/2606511.pdfIn PDF document text
    • https://lufosafol.weebly.com/uploads/1/3/0/7/130775677/a18cbeda6f7ac.pdfIn PDF document text
    • https://fojokelimavame.weebly.com/uploads/1/3/4/7/134713907/7847bd07f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408172/normal_5fce188f0c98c.pdfIn PDF document text
    • https://cdn.sqhk.co/lokojagivel/cgfhevD/88080548667.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/w3schools_templates_html.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/dionysus_festival_information.pdfIn PDF document text
    • http://zazisuj.epizy.com/47549912085.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/57092745082.pdfIn PDF document text
    • http://naxutokotegikad.epizy.com/satatafe.pdfIn PDF document text
    • http://xibubew.epizy.com/arthdal_chronicles_episode_18_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/animas_transformational_coaching.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d22d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD22D 5000 bytes
SHA-256: 619c5714ca989f5130ce68c04cc0d91640f58643cfa622e643ce9b768d3202c2
font_01_sfnt_off0000e322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE322 10664 bytes
SHA-256: 6fd89837168af877e9242f726552fe0d4e0e697c1e81b96e40abbc6fa99b0206
font_02_sfnt_off000107ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107AE 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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