Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c618bd2d7641c18…

MALICIOUS

PDF

109.0 KB Created: 2022-10-18 01:40:55 +00:00 Authoring application: nemufinl (via PDF Master 1.0.1) First seen: 2026-05-06
MD5: f6dc134ef829cb71c6d8929ae3d6f396 SHA-1: 2d99291e71d8b98f58ce52d9be3758161eef13f1 SHA-256: 6c618bd2d7641c18d38d69c6d8c656f36dc06be0204df0de5d28b73838ff3eae
224 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0012

Heuristics 7

  • 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.
  • Cracked-software lure uses shortlink/download gateway critical PDF_CRACKED_SOFTWARE_SHORTLINK_LURE
    PDF visible text advertises a crack, serial number, archive, or pirated-software download and pairs it with a shortlink or encoded download gateway. This is a high-confidence social-engineering carrier for unwanted software or droppers; the PDF itself is not a parser exploit.
  • Cracked-software lure uses download-gateway redirectors high PDF_CRACKED_SOFTWARE_REDIRECTOR_LINK_FARM
    PDF contains multiple cracked-software/keygen/serial-key lure links together with long encoded download-gateway URLs or known crack-download redirector hosts. This is stronger than generic piracy vocabulary: the document is an SEO lure that funnels users through redirect/download infrastructure commonly used for adware, unwanted software, or droppers.
  • PDF link farm advertises cracked/pirated software medium PDF_CRACKED_SOFTWARE_LURE
    PDF contains many clickable links whose targets use cracked-software, keygen, serial-key, or warez vocabulary. These are SEO-spam lure documents that rank for software-piracy searches and route users to fake 'crack' download pages distributing potentially-unwanted programs, adware, or droppers. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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
  • 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 http://bestsmartfind.com/carnivale.ZG93bmxvYWR8RmkzTVc1amNubDhmREUyTmpVM016TTROREY4ZkRJMU9UQjhmQ2hOS1NCWGIzSmtjSEpsYzNNZ1cxaE5URkpRUXlCV01pQlFSRVpk/buyinggroups.exchangor/bWVtZW50byBtb3JpIGNlc2FyIHBlcmV6IGdlbGxpZGEgZXB1YiBncmF0aXMbWV/mcgillicuddy/bretons PDF link annotation
    • https://openaidmap.com/hd-online-player-wic-reset-utility-crack-keygen-patch-__full__/In PDF document text
    • https://xn--80aagyardii6h.xn--p1ai/simcity-4-deluxe-edition-serial-nocd-crack-exclusive-sim-city-rar-generator/In PDF document text
    • http://insenergias.org/?p=93644In PDF document text
    • http://freemall.jp/honar-sun-ya-gharchi-title-song-download-top-mp3.htmlIn PDF document text
    • https://innovacioncosmetica.com/nutan-mathematics-12th-solution-pdf-free-top/In PDF document text
    • https://ibipti.com/4team-corporation-duplicate-killer-crack-top-129311/In PDF document text
    • https://teamshepherdspain.es/wp-content/uploads/2022/10/Sencor_Dvbt_Usb_Stick_Driver_Download_FREE.pdfIn PDF document text
    • https://instafede.com/bolradhabolhindimoviedownloadmp4-cracked/In PDF document text
    • http://hotelthequeen.it/wp-content/uploads/2022/10/dawquee.pdfIn PDF document text
    • https://www.lesbianmommies.com/wp-content/uploads/2022/10/Adobe_Photoshop_Lightroom_CC_2018_81_Crack_free_download.pdfIn PDF document text
    • http://www.talkamuso.com%2FviewtoIn PDF document text
    • https://xn--80aagyardii6h.xn--p1ai/simcity-4-deluxe-edition-serial-nocd-crack-exclusive-sim-city-rar-In PDF document text
    • https://teamshepherdspain.es/wp-In PDF document text
    • https://www.lesbianmommies.com/wp-In PDF document text
    • http://bestsmartfind.com/carnivale.zg93bmxvywr8rmkztvc1amnubdhmreuytmpvm016ttrorey4zkrjmu9uqjhmq2hos1ncwgizsmtjsepsyznnz1cxae5urkpruxlcv01pqlfsrvpk/buyinggroups.exchangor/bwvtzw50bybtb3jpignlc2fyihblcmv6igdlbgxpzgegzxb1yibncmf0axmbwv/mcgillicuddy/bretonsIn PDF document text
    • http://www.tcpdf.orgIn 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/xap/1.0/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.aiim.org/pdfa/ns/extension/In PDF document text
    • http://www.aiim.org/pdfa/ns/schema#In PDF document text
    • http://www.aiim.org/pdfa/ns/property#In PDF document text
    • http://www.aiim.org/pdfa/ns/id/In PDF document text
🗂 Part of campaign: secureserver.net 1471 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76 84508 bytes
SHA-256: 2b7ba551bea82cc3307397981c1dbeb1b78486f95f2eb14e5e58d4e1b24edb0c
font_01_sfnt_off00009762.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9762 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261