Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7872b75ea357bba…

MALICIOUS

PDF

63.4 KB Created: 2021-02-17 04:40:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f77914543a1efdc23591ab64d2f6d199 SHA-1: 623a94b197c58ae34bf9f708b13dadc24bcf1100 SHA-256: e7872b75ea357bbafa2a2eea80231a66b943ff152bfc0982362f4540a298ba78
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wix?keyword=monster+girl+garden+guide In PDF document text
    • https://xafusotegemuwif.weebly.com/uploads/1/3/5/3/135304795/5116084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393488/normal_5fdbec7112cdd.pdfIn PDF document text
    • https://bonikelebosobi.weebly.com/uploads/1/3/2/8/132814552/bisesusoj-saxopuzunununo-dubiruke.pdfIn PDF document text
    • https://nagipabusodeza.weebly.com/uploads/1/3/1/4/131453106/e448dfa1e.pdfIn PDF document text
    • https://wojewifonutej.weebly.com/uploads/1/3/4/8/134883442/fosugageka-dijunigatefa-mizeruvomapaw-loxowujil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375355/normal_602a444ebb532.pdfIn PDF document text
    • https://cdn.sqhk.co/fekawifen/hdhbhhz/buy_fish_aquarium_melbourne.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470552/normal_5fdd3f87f2395.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369185/normal_5ff45ff21bce3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pelubameta.epizy.com/33005146290.pdfIn PDF document text
    • http://kimanaw.epizy.com/32900346603.pdfIn PDF document text
    • http://pazefinexudet.rf.gd/what_does_the_pink_light_on_my_fitbit_flex_2_mean.pdfIn PDF document text
    • http://mifijikamipupu.epizy.com/gebanuraxaxowaxapolugezu.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/pumup.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_off0000bd72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD72 5000 bytes
SHA-256: b8c2cb31a20439ab0d0967ac2c4a21e76601820e30534b8c37ece54d447ecdee
font_01_sfnt_off0000ce87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE87 10040 bytes
SHA-256: 99993fe22638358c36915a191a6c145b526ff3a13a7fea7aa9034533f79316b5