Malicious PDF — malware analysis report

Static analysis result for SHA-256 89f79851056b2ecb…

MALICIOUS

PDF

117.9 KB Created: 2022-07-08 06:26:28 +00:00 Authoring application: hestyoor (via PDF Master 1.0.1) First seen: 2026-05-01
MD5: 117b8e57168dc4cea1ae2fc7893df1d0 SHA-1: c353c56f8c8121cd60497514ac4ef605c7ce7149 SHA-256: 89f79851056b2ecb9fbf983a0d5aecd0f0d0f9fb0709c7f0e828c039d6e6b83c
164 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0016

Heuristics 5

  • 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.
  • PDF links to a cracked-software download doorway (base64-obfuscated) high PDF_CRACKED_SOFTWARE_DOWNLOAD_DOORWAY
    PDF's embedded link hides a pirated-software title as a base64 blob inside the URL path/query (and/or carries the ``download|`` doorway-template marker), rather than in visible text. This is a TCPDF-generated SEO doorway that ranks for software-piracy searches and funnels users to fake 'crack/keygen' download pages distributing adware, potentially-unwanted programs, or droppers. The base64 encoding is deliberate obfuscation to evade plaintext lure rules; the PDF itself carries no parser exploit — the risk is the linked crack-download destination.
  • 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://emailgoal.com/constitute?invertebrates=diedrich.bW9tIGFuZCBzb24gdGVsdWd1IGJvb3RodSBrYXRoYWx1IGluIHRlbHVndSBmb250IDIzbW9.downstream&gollop=biomanufacturing&lorenzo=ZG93bmxvYWR8NEdMYVdkMmFIeDhNVFkxTnpFNE5qazFOWHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA PDF link annotation
    • https://www.residenzagrimani.it/wp-content/uploads/2022/07/dashnan.pdfIn PDF document text
    • https://pra-namorar.paineldemonstrativo.com.br/upload/files/2022/07/FV8RIiS1XakeplCKmUwD_08_ce5d94b61d0a8278872b6f70e34fdfa9_file.pdfIn PDF document text
    • http://majedarjoke.com/2022/07/08/free-link-download-the-fashion-sketchbook-by-bina-ablingrar/In PDF document text
    • http://www.expo15online.com/advert/adobe-audition-3-0-turkce-yama-55-patched/In PDF document text
    • https://elycash.com/upload/files/2022/07/KkvXs4pa3JuEyZdz28xy_08_7d26cf996da02c9f0d8ba565db2033fe_file.pdfIn PDF document text
    • https://questionnaire.ur.ac.rw/sites/default/files/webform/repotingdocs/khaglo389.pdfIn PDF document text
    • http://freemall.jp/soe-695-avi-better-2.htmlIn PDF document text
    • http://www.vxc.pl/?p=44060In PDF document text
    • https://instafede.com/image-trends-shineoff-2-1-4-and-pearlywhites-2-1-3-photoshop-plugins/In PDF document text
    • https://www.sensoragencia.com/wp-content/uploads/2022/07/Lim0nUnlock.pdfIn PDF document text
    • https://techstoserve.com/wp-content/uploads/2022/07/Maatran_Full_Movie_Watch_Online_Youtube_Without_Buffering_TOP.pdfIn PDF document text
    • https://dhakahalalfood-otaku.com/stc-modem-014-firmware-21l-top/In PDF document text
    • https://threepatrons.org/news/astute-graphics-plugins-collection-crack-__exclusive__/In PDF document text
    • https://fgsdharma.org/hoja-de-presentacion-uasd-pdf/In PDF document text
    • http://fajas.club/?p=31457In PDF document text
    • https://meetupss.com/upload/files/2022/07/htAmcJpb3Km2ayN2F24X_08_ce5d94b61d0a8278872b6f70e34fdfa9_file.pdfIn PDF document text
    • http://mrproject.com.pl/advert/hack-coreldraw-x8-2017-x32-x64-bits-better-crack/In PDF document text
    • https://workschool.ru/upload/files/2022/07/lsOlfybJMMY4oAfsEmD3_08_ce5d94b61d0a8278872b6f70e34fdfa9_file.pdfIn PDF document text
    • https://pra-namorar.paineldemonstrativo.com.br/upload/files/2022/07/FV8RIiS1XakeplCKmUwD_08_cIn PDF document text
    • https://elycash.com/upload/files/2022/07/KkvXs4pa3JuEyZdz28xy_08_7d26cf996da02c9f0d8ba565dbIn PDF document text
    • https://techstoserve.com/wp-In PDF document text
    • https://meetupss.com/upload/files/2022/07/htAmcJpb3Km2ayN2F24X_08_ce5d94b61d0a8278872b6fIn PDF document text
    • https://workschool.ru/upload/files/2022/07/lsOlfybJMMY4oAfsEmD3_08_ce5d94b61d0a8278872b6f70In PDF document text
    • http://emailgoal.com/constitute?invertebrates=diedrich.bw9tigfuzcbzb24gdgvsdwd1igjvb3rodsbryxroywx1igluihrlbhvndsbmb250idizbw9.downstream&gollop=biomanufacturing&lorenzo=zg93bmxvywr8nedmyvdkmmfiedhnvfkxtnpfne5qazfowhg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbdaIn PDF document text
    • https://trello.com/c/Q1Vv2QHw/159-free-download-guns-of-infinity-zip-newIn PDF document text
    • https://wakelet.com/wake/eN6awMo8qY7bRev0EHE56In 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_off00002371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2371 84648 bytes
SHA-256: 0b6c48f6a4e931a4572b13bb2af9ad514b0702ea3c747f8534c05d2c57946ed4
font_01_sfnt_off0000abd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABD4 83036 bytes
SHA-256: 6d13e73e85a502a13969f6a5eaecd0b275a0868c045f80b7d64ed55d70678261