Malicious PDF — malware analysis report

Static analysis result for SHA-256 3267d4e12fe9f8e9…

MALICIOUS

PDF

71.1 KB Created: 2021-02-11 21:54:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c9d23397b2eca6f77aa011487e008c55 SHA-1: de0fc4fdf80900ca005b9502ccc779a6b864e110 SHA-256: 3267d4e12fe9f8e905c876906fa88e1c38ad42902bed82204caac8182060a0f5
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://druttle.ru/wix?keyword=g+major+arpeggio+violin PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4382196/normal_5fd0306a38be3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426072/normal_5fca469f857a9.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/gfhcngh/fox_sports_go_apple_tv_without_cable.pdfIn PDF document text
    • https://tulapubilogu.weebly.com/uploads/1/3/4/8/134881906/4001451.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378381/normal_5fdc95820e206.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382953/normal_6000a76d08d1a.pdfIn PDF document text
    • https://gizutiki.weebly.com/uploads/1/3/4/4/134478998/9486249.pdfIn PDF document text
    • https://vosuzupitozom.weebly.com/uploads/1/3/5/3/135313705/nikoxarogajikev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369313/normal_60015d1c94ec1.pdfIn PDF document text
    • https://cdn.sqhk.co/wejewenu/xhd9ige/nfl_network_thursday_night_football_analysts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368506/normal_5fcf3beb4a39a.pdfIn PDF document text
    • https://cdn.sqhk.co/kagaxavog/ggjgujd/90207072745.pdfIn PDF document text
    • https://nobewiga.weebly.com/uploads/1/3/5/3/135315034/22365d8bb.pdfIn PDF document text
    • https://worowisirokisid.weebly.com/uploads/1/3/4/8/134856274/e5f2515a6.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/jedadokuti/android_one_moto_x4_vs_nexus_5x.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/appvn_apk_android_2._3.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/82872383069.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/japojaziragogarek.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/2893117106.pdfIn PDF document text
    • http://dobejevilorizu.epizy.com/72837385141.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_off0000d07b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD07B 5128 bytes
SHA-256: 91a9b7303edeac43f3e8670a0334be93983d8c044fb83b3a8b685cdf338505fd
font_01_sfnt_off0000e1df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1DF 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off0000ea6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6D 10180 bytes
SHA-256: 255ab3a66d63df99bef4c9df3fc05b519e1cda115fb3777e4b03dc8c6306f085