Malicious PDF — malware analysis report

Static analysis result for SHA-256 855fc32ee35eb203…

MALICIOUS

PDF

135.5 KB Created: 2022-07-06 01:32:52 +00:00 Authoring application: talequym (via PDF Master 1.0.1) First seen: 2022-07-15
MD5: 1ccc3a94ca8763f3e0bbf2811b9a5960 SHA-1: be5a021f269fc2101a1b8c368f69a761192a6ba8 SHA-256: 855fc32ee35eb203b71bd9986f33418be3922c11994b38252a1cf74005943a96
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which advertise cracked or pirated software. One of the embedded URLs, http://rocketcarrental.com/..., appears to be a redirector or a malicious landing page. The presence of a link farm and the lure of cracked software indicate a social engineering attack aimed at tricking users into downloading potentially malicious files. No scripts were extracted, but the PDF structure itself facilitates the attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0090

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://rocketcarrental.com/agimony=marigot/ramsar/interventional/ZWx2aXNjcmVzcG9kaXNjb2dyYWZpYWNvbXBsZXRhZWx/ZG93bmxvYWR8VWEwTVhWM09YeDhNVFkxTnpBMk56RTFOSHg4TWpVM05IeDhLRTBwSUhKbFlXUXRZbXh2WnlCYlJtRnpkQ0JIUlU1ZA.desiccation PDF link annotation
    • https://bascomania.com/wp-content/uploads/2022/07/tone2_nemesis_download_crack_for_gta.pdfIn PDF document text
    • https://influencerstech.com/upload/files/2022/07/A7jFpQn5hDzuMywDAIj5_06_90db80757f648d3370c964a43a99ce96_file.pdfIn PDF document text
    • https://boldwasborn.com/wp-content/uploads/2022/07/Neurodesarrollo_Neonatal_E_Infantil_Chavez_Torres_Pdf_Download_BEST.pdfIn PDF document text
    • https://bariatric-club.net/wp-content/uploads/2022/07/Download_Microsoft_Office_Professional_Plus_2013_X86x64_Volume_LINK.pdfIn PDF document text
    • https://scrolllinkupload.s3.amazonaws.com/upload/files/2022/07/msCPAkIdXwdslSILvU7M_06_49dd09b3dba40e327f06ae7b32f1bd30_file.pdfIn PDF document text
    • https://www.mil-spec-industries.com/system/files/webform/Mafia-2-Trainer-1001-Skidrow-14k.pdfIn PDF document text
    • https://togetherwearegrand.com/xenapp-6-5-iso-best-download/In PDF document text
    • https://zipozap.com/wp-content/uploads/2022/07/Evaluaciones_matematicas_5_primaria_sm_savia.pdfIn PDF document text
    • https://entsunshinecoast.com.au/sites/default/files/webform/patient-referral/yamicris941.pdfIn PDF document text
    • http://stv.az/?p=15996In PDF document text
    • https://suchanaonline.com/one-piece-3d-trap-coaster-720p/In PDF document text
    • http://lms.courses4u.in/blog/index.php?entryid=9026In PDF document text
    • https://abcd.care/sites/abcd.care/files/webform/jaecay878.pdfIn PDF document text
    • https://aisikho.guru/blog/index.php?entryid=3277In PDF document text
    • https://damariuslovezanime.com/microsoft-songsmith-keygen-serial-15-__top__/In PDF document text
    • https://getfluencyonline.com/wp-content/uploads/2022/07/Vag_Com_4091_HOT_Crack.pdfIn PDF document text
    • https://customaffiliations.com/wp-content/uploads/2022/07/talgeb.pdfIn PDF document text
    • https://influencerstech.com/upload/files/2022/07/A7jFpQn5hDzuMywDAIj5_06_90db80757f648d3370In PDF document text
    • https://boldwasborn.com/wp-content/uploads/2022/07/Neurodesarrollo_Neonatal_E_Infantil_Chavez_TIn PDF document text
    • https://bariatric-club.net/wp-content/uploads/2022/07/Download_Microsoft_Office_Professional_Plus_2In PDF document text
    • https://scrolllinkupload.s3.amazonaws.com/upload/files/2022/07/msCPAkIdXwdslSILvU7M_06_49dd09In PDF document text
    • https://zipozap.com/wp-In PDF document text
    • https://socialspace.ams3.digitaloceanspaces.com/upload/files/2022/07/xorNQTNWL1hQ76mtpdrQ_06_90db80757f648d3370c964a43a99ce96_file.pdfIn PDF document text
    • http://plifpenlink.yolasite.com/resources/Air-Elicenser-Emulator-2-2-1-Rar881-FULL.pdfIn PDF document text
    • https://www.lakeheadu.ca/system/files/webform/employment_opportunities/Toyota-EPC-crack.pdfIn PDF document text
    • http://www.tcpdf.orgIn PDF document text
    • https://socialspace.ams3.digitaloceanspaces.com/upload/files/2022/07/xorNQTNWL1hQ76mtpdrQ_06In 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_off00002183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2183 84652 bytes
SHA-256: 4afa1760e2b1183eedc04ece45e6ca142828bb1815d2ec2d36bc01b6dcd9471b
font_01_sfnt_off0000a9cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9CB 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261