Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8fa3929719e317e…

MALICIOUS

PDF

71.1 KB Created: 2021-02-13 17:05:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: e8a89d4bc9548d0ddefc2dda87c88801 SHA-1: 6c584e8ffc9cffb2d3d39d414946a4602533fe56 SHA-256: c8fa3929719e317ea954d350e7902bb9db3496311088cad0759bab7715a9cce8
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=taylorville+high+school+yearbook In PDF document text
    • http://goodsun.fun/44540701740mosb2.pdfIn PDF document text
    • http://pycnidwzxc.info/jegozyy9y5.pdfIn PDF document text
    • https://womarunere.weebly.com/uploads/1/3/4/3/134315700/jowifimu.pdfIn PDF document text
    • http://e-devletodeme.net/88512749149sce6v.pdfIn PDF document text
    • http://italystore.pro/11721445356q5gmx.pdfIn PDF document text
    • http://requiremcgood.com/mofenegakerikofipez9vhh2.pdfIn PDF document text
    • http://gouliwer.online/430216439912dm7e.pdfIn PDF document text
    • https://wugeneziwepuzi.weebly.com/uploads/1/3/4/4/134494794/muvovona-wuxizarab-zivej-nevabov.pdfIn PDF document text
    • http://bio-ita.fun/dumobifiznrg8j.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/febopa/65626803586.pdfIn PDF document text
    • http://mojedebebetum.epizy.com/hardball_imdb_parents_guide.pdfIn PDF document text
    • http://wirijabi.rf.gd/new_punjabi_songs_2018_video.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/46602646449.pdfIn PDF document text
    • http://tebimanapedupun.epizy.com/18987857359.pdfIn PDF document text
    • http://zovuzop.epizy.com/musapube.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_off0000d914.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD914 5376 bytes
SHA-256: ab773f5da232f78961385157384b6ed0f62868975e10b2881b1743ed29ce2241
font_01_sfnt_off0000eb6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6B 10588 bytes
SHA-256: 2dff134de36832c417f178f241486372aceb45ca74e5412e7a8a9ecbc10f48b2