Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cae808ba6e06eaa…

MALICIOUS

PDF

83.0 KB Created: 2021-03-05 22:45:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 45b5b771a918afcac24b968e26949427 SHA-1: 0edb8b95b3a4913c46a33b37cf77b06ea2b8c37b SHA-256: 9cae808ba6e06eaa32f72e4e43b9b610e9a9d5e04cdd1730e2895634b29303ce
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, identified as a link farm, with the primary suspicious URL being lozipotod.ru. The ClamAV detection and ML classifier strongly indicate maliciousness, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://lozipotod.ru/wix?keyword=biblicamente+cuales+son+los+7+espiritus+de+dios PDF link annotation
    • https://ropejanetim.weebly.com/uploads/1/3/4/6/134600341/gunuworozufuziv.pdfIn PDF document text
    • https://vururera.weebly.com/uploads/1/3/4/4/134493513/7683191.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/3794812.pdfIn PDF document text
    • https://rosufira.weebly.com/uploads/1/3/1/4/131408230/3b109865ba35df.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lofese/former_crossword_clue.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/quantitative_data_analysis_definition.pdfIn PDF document text
    • https://0df6220b-9630-4647-aab6-0d9db69b9d59.filesusr.com/ugd/8b97dd_332fec81511743048868aa1e57ee3487.pdf?index=trueIn PDF document text
    • https://c145ee04-3c3b-4786-8b94-e0511401b322.filesusr.com/ugd/de65f7_de32506e2dba4017969f5e2e03113506.pdf?index=trueIn PDF document text
    • https://dc6b22d1-fd3c-476a-b8f1-b0505981f591.filesusr.com/ugd/ab5adf_81c57f0fd050463899acaeb6e87d5724.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0241fb67-68cf-4238-acf3-fa4e817f7b5a/7601141003.pdfIn PDF document text
    • https://460eb545-5389-4aa9-9e78-d1074a8bca0c.filesusr.com/ugd/21a131_2342ffd38de64dd0906bba4c1dfeac1f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mokixetat/sony_sa-ct260h_wont_turn_on.pdfIn PDF document text
    • https://7a9095e9-4ba3-4ff7-9406-a75d0382ce8a.filesusr.com/ugd/db93e9_46c70957ac494d3bb994f22fa27e08ed.pdf?index=trueIn PDF document text
    • https://cf075d60-af7c-4c71-a16c-5c8c125a9bb7.filesusr.com/ugd/cc03df_0c67e0cd374d4ae79ba05b81ddf51e26.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec576c58-9aea-4e27-ba60-06b4af11a05f/73788278712.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/game_karne_ke_liye_kya_kare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03e798dc-8378-4355-9c36-0f1452cbf36e/61674013343.pdfIn PDF document text
    • https://4a31e3f8-49e3-4331-b1a9-c0bb7a6b9dbc.filesusr.com/ugd/599f1c_89dced63f94946a2be4d0fcc17e65f89.pdf?index=trueIn PDF document text
    • https://1237a3da-0b33-4890-9ba9-974507bf2590.filesusr.com/ugd/3e0cb9_a5f150f11e54487f8dbac11841b147a1.pdf?index=trueIn PDF document text
    • https://b5c90759-dbf8-4ccd-b12d-e23c958527f9.filesusr.com/ugd/915a55_c03f86d68a3f4edca98dc56d17be1e3b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lusabifef/11653468083.pdfIn PDF document text
    • https://737c154f-ca75-4484-807d-9d5c19d76377.filesusr.com/ugd/7e84b7_8dc0b960188d4ad8bd8c112d85a43f72.pdf?index=trueIn PDF document text
    • https://74fc1a11-d445-4ffb-bc6b-7a79e5a65a18.filesusr.com/ugd/097bd5_c1e711351b9a4d2f81729bfef3585a41.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BD 5368 bytes
SHA-256: b26d7908405ab4203227885b9b27c399247ee4393f876005028a077a7f484bc3
font_01_sfnt_off000107d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D7 11876 bytes
SHA-256: d5afb3d99fa40d0030e28959799496ad77fd2c3c5393b2f22637eccfb15f41dd
font_02_sfnt_off00012e71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E71 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71