Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87cbcc889fb9d17…

MALICIOUS

PDF

71.0 KB Created: 2021-02-18 11:21:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6b1df5e2a950be4e13a5e30cbfb30266 SHA-1: 46079d9cfcfe0c29e9d583c4a17197c9e62d1981 SHA-256: f87cbcc889fb9d17ca51316580368818381a4c38b23cb107a05603285b8b0129
186 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
  • 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://leonvi.ru/wix?keyword=abriendo+paso+lectura+teacher%2527s+edition+pdf PDF link annotation
    • https://cdn.sqhk.co/gipagigo/hjhiqS9/31221315142.pdfIn PDF document text
    • http://tenp-mail.xyz/koxuxifojutameweczy5q.pdfIn PDF document text
    • https://wojedebaroz.weebly.com/uploads/1/3/1/6/131637691/gigikenani_wesugu_timipizajibaped_gutegokes.pdfIn PDF document text
    • https://cdn.sqhk.co/vonezositixi/heiaqgj/26641209645.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/Rmkgccl/watercolor_happy_mothers_day_meme.pdfIn PDF document text
    • https://roxomikanu.weebly.com/uploads/1/3/0/8/130873860/8e85029.pdfIn PDF document text
    • http://50offstore.pro/rozivapixaov281.pdfIn PDF document text
    • https://cdn.sqhk.co/kusamika/jj9hfgh/digitech_jamman_stereo_looper_delay.pdfIn PDF document text
    • http://usblighter24.site/51863679047ns5o2.pdfIn PDF document text
    • http://compte-cmbretagne.best/grammarly_desktop_appt2flx.pdfIn PDF document text
    • http://yourdesk.website/jawegigujolekesadojufuurdd.pdfIn PDF document text
    • https://cdn.sqhk.co/nixibaraje/jdYihWr/my_tiny_pet_mod_apk.pdfIn PDF document text
    • https://pipabujul.weebly.com/uploads/1/3/2/6/132680817/6104814.pdfIn PDF document text
    • https://cdn.sqhk.co/sulezudipozi/ejficLr/bapasegisedub.pdfIn PDF document text
    • https://cdn.sqhk.co/sadebupunen/eBegh3Y/happy_wheels_mod_apk_download_android_1.pdfIn PDF document text
    • https://lamamamim.weebly.com/uploads/1/3/1/6/131606140/desorofe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gurevome.rf.gd/59175168549.pdfIn PDF document text
    • http://lupipabibokaf.rf.gd/ashes_cricket_2009_for_windows_7.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E0 5404 bytes
SHA-256: 11d26fc17b4afb8962d5258f2e2a37b2aee40434923f02d258ee840faff84d09
font_01_sfnt_off0000eb38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB38 10360 bytes
SHA-256: b78ec2caa1f562dbffef21195c0a6a8a88682172efe93603a8578dd6ebf6ad0b

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