Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb175fb01c1170b5…

MALICIOUS

PDF

71.5 KB Created: 2021-01-31 08:27:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 07e835b88755c5f58c6b80fd3fa1773a SHA-1: 3152966671c74c06e86cba4f86daad9185df80c4 SHA-256: eb175fb01c1170b55c36ac9a217fa8df55a63a2f53e46b92e4f3effff7013b8f
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=the%20walking%20dead%20game%20iphone%20wallpaper In PDF document text
    • https://damemerivojed.weebly.com/uploads/1/3/4/3/134378109/90297a190142e6.pdfIn PDF document text
    • http://fitokaps.xyz/18340793900zypel.pdfIn PDF document text
    • http://aycotoro6.xyz/962220260588ba33.pdfIn PDF document text
    • http://klossheff.xyz/adjectif_interrogatif_quel8hdwa.pdfIn PDF document text
    • https://marikikugawu.weebly.com/uploads/1/3/5/3/135326377/25b2d2c12e7e3.pdfIn PDF document text
    • https://kigadipokifexi.weebly.com/uploads/1/3/0/8/130813079/68c3e50229738.pdfIn PDF document text
    • http://kosiwixiwumizu.iblogger.org/zoverasunekapevinezo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495409/normal_5fec29125cb7b.pdfIn PDF document text
    • https://cdn.sqhk.co/mawejoxejobe/ghqij3d/segilorupeguxu.pdfIn PDF document text
    • http://vemasujananexu.22web.org/agneepath_1990_songs_pk_free.pdfIn PDF document text
    • http://halfraire.xyz/wild_card_series_mlb_2020_standingse3ttv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366304/normal_5fc5b2db802d6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://miduzusajaveg.rf.gd/31680505612.pdfIn PDF document text
    • http://fawivemepogu.epizy.com/zetoxolutexug.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/61468083043.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_off0000da75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA75 5300 bytes
SHA-256: f8cafa3c92a00c22995c2d4b7980e3d319d2da071b46687c72a7859cd5ba285d
font_01_sfnt_off0000ec65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC65 10668 bytes
SHA-256: f676cc016f2c1437083c3fe49db2ad41b816ad62c39dba6b7c9aeaab8347b397