Malicious PDF — malware analysis report

Static analysis result for SHA-256 68a6e7f82ef9bc9e…

MALICIOUS

PDF

68.3 KB Created: 2021-01-22 09:41:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fed187b8df76ae8188dff2bfc06fe3c1 SHA-1: 1c27b3e5d07ed68160188c54760f34e8b052d815 SHA-256: 68a6e7f82ef9bc9e04f2bd82ad2e2f7c9f223c0c1ba33dcb2d20935d44c2971d
192 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
  • 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.
  • 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
  • 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/wb?keyword=arijit%20singh%20songs%202020%20download%20mr-%20jatt In PDF document text
    • http://xifotole.iblogger.org/41008670959.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385876/normal_5fd10eb4c9400.pdfIn PDF document text
    • https://site-1167950.mozfiles.com/files/1167950/ralphs_address_near_me.pdfIn PDF document text
    • https://melazikadoxu.weebly.com/uploads/1/3/4/5/134594637/205735b2.pdfIn PDF document text
    • https://site-1173612.mozfiles.com/files/1173612/perfect_strike_bowling_alley.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5fd109ef99eb8.pdfIn PDF document text
    • https://gezameluloxeg.weebly.com/uploads/1/3/5/3/135393377/kozolazimuzozurow.pdfIn PDF document text
    • https://site-1168049.mozfiles.com/files/1168049/44688391980.pdfIn PDF document text
    • https://mufanujirube.weebly.com/uploads/1/3/5/3/135348440/sajam.pdfIn PDF document text
    • https://site-1174103.mozfiles.com/files/1174103/56967850839.pdfIn PDF document text
    • https://site-1168368.mozfiles.com/files/1168368/76105056420.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://suvowafavij.epizy.com/28626192242.pdfIn PDF document text
    • http://fevepapowiwed.epizy.com/27581994632.pdfIn PDF document text
    • http://gujupikisikali.epizy.com/kgf_amma_hd_images.pdfIn PDF document text
    • http://ragigixo.epizy.com/49793875418.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_off0000c985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC985 5700 bytes
SHA-256: df72aee8e1635984191d5822be05901d0a7c1ae8ba079e5301e71d273023df84
font_01_sfnt_off0000dcdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDB 12512 bytes
SHA-256: 201fd8f617c3f4612a92fa71d8a508bc8bf539fb44629daf51969634ac7a7e2c