Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc0371efa1f36f3…

MALICIOUS

PDF

71.7 KB Created: 2021-02-01 20:11:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8e3ea6d228befef51bfd2ca6ad12f394 SHA-1: 925f7efcece8d331a080f83d5cb73f9297de8d93 SHA-256: 9fc0371efa1f36f320674a5fb92e7d826cacd39a873eb6125514edd5db79508d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • 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.
  • 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://bologen.ru/123?utm_term=iphone+8+plus+giveaway+free PDF link annotation
    • http://avit0.cc/best_goal_goal_predictions_today4fg8d.pdfIn PDF document text
    • https://cdn.sqhk.co/zozijawutuxu/jCjePw1/60227382379.pdfIn PDF document text
    • https://kozegefiseram.weebly.com/uploads/1/3/1/3/131379202/4472929.pdfIn PDF document text
    • https://paguzijap.weebly.com/uploads/1/3/1/4/131453408/d2ec8c84af35da4.pdfIn PDF document text
    • http://apkweb.net/gems_of_war_match_3_rpg_mod_apk5vk3a.pdfIn PDF document text
    • https://gokejubekilebu.weebly.com/uploads/1/3/4/3/134376129/vatil_zuginumod_kibolozolaka_moxatoxixut.pdfIn PDF document text
    • http://6gusevshop.space/fox_news_live_election_results4nhel.pdfIn PDF document text
    • http://cloudplay.xyz/powuwojaxevujawolea7asf.pdfIn PDF document text
    • http://ilkertr.shop/govubusitagizuvilasodidnzz8f.pdfIn PDF document text
    • http://larts.digital/15108508361vxjxg.pdfIn PDF document text
    • http://mail-autoscout24.net/free_award_certificate2kcvd.pdfIn PDF document text
    • http://mugedly.xyz/zombieland_2_madison_returnstaj12.pdfIn PDF document text
    • https://pasoxogul.weebly.com/uploads/1/3/5/3/135399766/6728343.pdfIn PDF document text
    • https://govexofube.weebly.com/uploads/1/3/1/8/131872198/deganelazowex_borufenewot.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/wupagivoz/memujojazojazamakoru.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_off0000d9f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F5 5548 bytes
SHA-256: bd3d8381352dcd1919de12cb172b44ab0d7afd5292375322bf3b26b339bddaa5
font_01_sfnt_off0000ecf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF5 10896 bytes
SHA-256: 9b4c2521a9c228988937177f1d5d36ecbc96ab457db1ad0fe1b8b20848d7b59b