Malicious PDF — malware analysis report

Static analysis result for SHA-256 d483b582ad2a4340…

MALICIOUS

PDF

82.9 KB Created: 2021-03-23 15:47:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c22bf1c74452fdf1eba8ea71d07abb57 SHA-1: 507fbd2460340caf3e5729065ec7a490a3d4f874 SHA-256: d483b582ad2a43407b457608063f204965c7f883cbbea485117d7d7ba8dc5b63
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/award?keyword=list+of+adjectives+to+describe+personality+pdf PDF link annotation
    • http://interior.estate/crear_un_archivo_en_linux_desde_terminal4pwmk.pdfIn PDF document text
    • http://francobusiness.com/prehistorico_definicion_raex8efv.pdfIn PDF document text
    • http://idealica-co.site/laxebomixixiwurisuretixhyckd.pdfIn PDF document text
    • http://freedate18.xyz/648378593674iokj.pdfIn PDF document text
    • http://kvrovk.xyz/sadimixadozevo1ukjw.pdfIn PDF document text
    • http://topplafond.xyz/fevas5gvga.pdfIn PDF document text
    • http://resimpub.com/67221663985ou22a.pdfIn PDF document text
    • https://cdn.sqhk.co/gulifunanale/djbOiiU/navojewidojibewo.pdfIn PDF document text
    • https://cdn.sqhk.co/duwenaxiseve/jgfB1ge/your_city_3d_free_download.pdfIn PDF document text
    • http://kzrovk.xyz/bindservice_android_studioo24do.pdfIn PDF document text
    • http://blog-millionaire.buzz/fejegonotosoxuve3w5hv.pdfIn PDF document text
    • http://kvrovk.xyz/kenmore_washing_machine_repair_near_meii4jr.pdfIn PDF document text
    • http://electriccannoz.club/juzapirojukitobirujeberfkpky.pdfIn PDF document text
    • http://makedctl.site/jegefib9mo4t.pdfIn PDF document text
    • http://silkhfig.bid/20435735909v4bmz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e27bae0f-2c5c-4aeb-983b-69210162d206/how_to_be_a_graphic_designer_without_losing_your_soul_adrian_shaughnessy.pdfIn PDF document text
    • http://sowabufiki.rf.gd/38178959362.pdfIn PDF document text
    • http://banines.rf.gd/jafuwajifilikenawuwazomi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f4c1f13-261d-4bc5-bfe0-e2f9e2ed3378/is_skim_milk_allowed_on_21_day_fix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f469a8c9-3027-402c-9470-6c7be8d2a90c/lusibalepobajopasikanex.pdfIn PDF document text
    • http://xofisoroj.rf.gd/49546229082.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08ae4389-400a-4971-9cf2-72fac42a11c1/yardman_snowblower_carburetor_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7963483a-2a17-44f8-b45b-09f33383f0ca/50419543686.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_off00010789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10789 5468 bytes
SHA-256: 5e3bc59482c3a04db98d06db976ac1a653a5d8812e7bbaf3ec8250eda68d4c1c
font_01_sfnt_off00011a47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A47 10404 bytes
SHA-256: 02d81a0d56e0a1cb656eb1d2bccef2a24004c70ff4aa06762176e1ec8aee5198

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