Malicious PDF — malware analysis report

Static analysis result for SHA-256 85ce69353e896dc3…

MALICIOUS

PDF

140.4 KB Created: 2022-07-02 10:53:54 +02:00 Authoring application: glekalk (via PDF Master 1.0.1) First seen: 2022-07-15
MD5: 5de2e2b80bcb24ee467ee5ebf8134ef0 SHA-1: 807afd07c5788d15c3b089dd9a340f8fe7553d9b SHA-256: 85ce69353e896dc390135188c82a50d792d953862ea76ba6c9e6aed244f4874f
94 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are advertised as cracked software. The heuristic 'PDF_SEO_LINK_FARM' indicates a link farm designed to attract users with promises of free software. The embedded URLs and the link farm suggest an attempt to redirect users to malicious sites for downloading potentially harmful files.

Machine Learning

  • Nyx PDF Classifier clean score 0.0077

Heuristics 4

  • 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.
  • 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.
  • 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://blogbasters.com/gesticulation.impounded.YmxhY2ttYWdpYyBtZWRpYSBleHByZXNzIGRvd25sb2FkIHNvZnR3YXJlYmx/sherpas/ZG93bmxvYWR8ZXc3WTNvMWNueDhNVFkxTmpjeE1qTXdOWHg4TWpVM05IeDhLRTBwSUhKbFlXUXRZbXh2WnlCYlJtRnpkQ0JIUlU1ZA.indulgences PDF link annotation
    • https://hanffreunde-braunschweig.de/candydollvalensiyasset4115-better/In PDF document text
    • https://pascanastudio.com/art-modeling-liliana-model-sets-01-89/In PDF document text
    • https://www.corsisj2000.it/wp-content/uploads/2022/07/gran_turismo_6_pc_crack_64.pdfIn PDF document text
    • http://supreo.fr/wp-content/uploads/2022/07/the_man_who_sold_the_world_bowie_mp3_download.pdfIn PDF document text
    • https://sundtindtag.dk/%AlternativIn PDF document text
    • https://toronto-dj.com/advert/packmage-2-0-1-0-best-crack-software/In PDF document text
    • https://believewedding.com/wp-content/uploads/2022/07/City_Car_Driving_Free_Download_V227_Crackl_UPD.pdfIn PDF document text
    • https://www.careerfirst.lk/sites/default/files/webform/cv/hot-copy-paste-7-crack.pdfIn PDF document text
    • https://cscases.com/bualisinabooksinurdupdf129-extra-quality/In PDF document text
    • https://formyanmarbymyanmar.com/upload/files/2022/07/S2lQFX8HLWbds3NR2zVU_02_25085280eb9a493a5763dd04ee08d208_file.pdfIn PDF document text
    • https://livesound.store/wp-content/uploads/2022/07/adobe_fireworks_cs6_amtlibdll_fixed_crack.pdfIn PDF document text
    • https://www.reperiohumancapital.com/system/files/webform/ulrperv804.pdfIn PDF document text
    • http://www.camptalk.org/wp-content/uploads/2022/07/Download_Terjemah_Kitab_Ar_Ruh_P.pdfIn PDF document text
    • https://wasshygiene.com/solucionariostewart6edicionpares/In PDF document text
    • http://bukitaksara.com/?p=7850In PDF document text
    • https://wormenhotel.nl/wp-content/uploads/2022/07/gianlaty.pdfIn PDF document text
    • https://waappitalk.com/upload/files/2022/07/Rpi9JMfbsT5swjoeNpak_02_25085280eb9a493a5763dd04ee08d208_file.pdfIn PDF document text
    • http://www.oscarspub.ca/crack-simulador-turismo-carretera-rar-install/In PDF document text
    • https://whatchats.com/upload/files/2022/07/Ur4LczJsGkmBMQ2j12FD_02_25085280eb9a493a5763dd04ee08d208_file.pdfIn PDF document text
    • https://www.careerfirst.lk/sites/default/files/webform/cv/daryzeli859.pdfIn 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
stream_003_off0000170a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x170A 120652 bytes
SHA-256: db1c58b1c0ed7624b9711c2fbfe9a6d086ccec862e4aff960158a2e6e27093fd
font_01_sfnt_off0000c659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC659 76772 bytes
SHA-256: 07ce6fea3c98bf59133021be55ce9147f9c26365efe580a2a4f82130ca697f54