Malicious PDF — malware analysis report

Static analysis result for SHA-256 572734dadc67a246…

MALICIOUS

PDF

74.9 KB Created: 2021-02-25 08:18:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3160da9920c039d2f1b164fefa257e51 SHA-1: d81ec0bc92cf5ee0f3d88c736fe9f732402fc407 SHA-256: 572734dadc67a246c9ff2ad5d10f5a617d067a57828a4aec8c7f4b8d2d2516a8
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/award?keyword=tissot+1853+battery+price PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4403270/normal_5ff4ce73684e2.pdfIn PDF document text
    • http://o-karte-kopilka.com/mapesivezemijesexekod02hh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505687/normal_60073a469f845.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417531/normal_6036e0adccdaf.pdfIn PDF document text
    • http://paksorond.xyz/danielle_steel_neighbors_vk7tt8z.pdfIn PDF document text
    • http://women-ita.space/interjection_worksheets_onlineoti3v.pdfIn PDF document text
    • http://quickstore.pro/81148172596wgi1o.pdfIn PDF document text
    • http://merogerofame.66ghz.com/vovekap.pdfIn PDF document text
    • http://reactivaperu-2020.com/25504432840g8aup.pdfIn PDF document text
    • https://kimakinogi.weebly.com/uploads/1/3/0/7/130775446/17b4372e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421056/normal_5fdd3ae5ec8d5.pdfIn PDF document text
    • http://igcopyrightforhelps.com/form_12c_computation_sheeto57rp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423429/normal_6006ea41da1c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373520/normal_6019a0948acf9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zobovobewuw.epizy.com/christian_names_with_meaning.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_off0000e6d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D6 5620 bytes
SHA-256: 028c9ddc1c08772bdccd46fed96412baaff9c0ec0875c984b60a36b08d979e70
font_01_sfnt_off0000fa12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA12 10880 bytes
SHA-256: 4932d27b87cf05d812a672892173ea61a77d07dee6b6933c035c05df66c90d98