Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8ed72538d0d7a6e…

MALICIOUS

PDF

72.4 KB Created: 2021-03-28 18:27:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 66724e9615314472115b24d661297c1b SHA-1: d4fe92ccbaaa0e114d0492c31ff192e38030d177 SHA-256: d8ed72538d0d7a6e7704463034a303f154c832faf35e9392401bdae66de1c1cf
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it contains a link farm with numerous external URLs, many hosted on disposable domains, suggesting a phishing or SEO manipulation scheme. The document body, though heavily obfuscated, contains references to 'Anandam telugu movie bgm free' and authoring application details, which may serve as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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 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.
  • 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://xajibur.ru/123?utm_term=anandam+telugu+movie+bgm+free PDF link annotation
    • https://nitetawowi.weebly.com/uploads/1/3/5/3/135301411/kemetusogaxaretuka.pdfIn PDF document text
    • http://tigadugutuvatix.mygamesonline.org/kugirovekesefir.pdfIn PDF document text
    • http://gebevojika.mygamesonline.org/plant_virology_free_download.pdfIn PDF document text
    • http://komozazene.getenjoyment.net/85736166066.pdfIn PDF document text
    • https://sufevibuxaka.weebly.com/uploads/1/3/2/7/132712301/7b550d91d.pdfIn PDF document text
    • https://gosabotef.weebly.com/uploads/1/3/4/3/134332229/mesebegire_somib.pdfIn PDF document text
    • https://zirejuvisipaz.weebly.com/uploads/1/3/1/6/131636922/nukukizujuk.pdfIn PDF document text
    • http://jevafurevozu.mygamesonline.org/apostila_caldeiraria.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4bd9ed84-c80b-4837-bb2f-b1353ebfd8aa.filesusr.com/ugd/5a1791_0d618b2a8bc84f29a577e18e7b28909e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc34ce6a-3e48-41e5-b18a-381d1c1bbbed/bepiwosexudozame.pdfIn PDF document text
    • http://saluwagasa.onlinewebshop.net/lalaje.pdfIn PDF document text
    • https://5366dd3f-28a3-4342-b8e5-5bed86455aec.filesusr.com/ugd/a92322_c67df754d678473caf78fc48f5ebcad9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/spirax_sarco_steam_trap_selection_guide.pdfIn PDF document text
    • https://a1359116-1358-4cde-afc5-3600b4bb50db.filesusr.com/ugd/3b0c81_bf9e934a4be14df89459de538e7e9063.pdf?index=trueIn PDF document text
    • http://wokarodefi.onlinewebshop.net/moxorenitefaxixon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f8c408e-1658-458e-9175-711d505b5ecc/how_to_achieve_gravity_in_space.pdfIn PDF document text
    • http://tosabukevosubar.myartsonline.com/88923392518.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/sabevutedetimagakadig.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/advantages_of_information_technology_in_business.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c5190ed-6496-4410-afef-9374c7762f1f/is_there_going_to_be_a_season_2_of_abyss_kdrama.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8943909d-d242-4671-b103-b15eb59fce50/90423167897.pdfIn PDF document text
    • https://9eaa565e-fb97-40b4-b096-d6760803f699.filesusr.com/ugd/55e2c6_64b28e9447654273bea51335b0410c23.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c944.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC944 5236 bytes
SHA-256: d099e2734031287372a3e3bf4611872746181962c133e7fc1dd53e33e3813395
font_01_sfnt_off0000db0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB0C 10256 bytes
SHA-256: 6d6937011a62d67c77f5f34ad82e1f0b45b7d7890b0d876f6ca383b532f96031
font_02_sfnt_off0000fe7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7F 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

Open this report in the interactive analyzer, or submit your own file for analysis.