Malicious PDF — malware analysis report

Static analysis result for SHA-256 2627982b3ee0b4ea…

MALICIOUS

PDF

85.2 KB Created: 2021-05-23 09:41:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 1908fd83be836f1e890e0128f4c769ee SHA-1: d46b4230220705a7745f8aa019ed18936bf62cb4 SHA-256: 2627982b3ee0b4ea6f33e01c5f0646bad1040e4d7c43654ea244d4a94bbeefb3
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, characteristic of a link farm designed to improve search engine rankings or distribute malicious content. The primary URL, 'https://lozipotod.ru/strik?utm_term=bewafa+hai+tu+new+mp3+song+download+mr+jatt', suggests a lure related to song downloads, which is a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the distribution of a phishing or trojan payload.

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/strik?utm_term=bewafa+hai+tu+new+mp3+song+download+mr+jatt PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465690/normal_5fe1147b5bb05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376374/normal_606e07bad5664.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446633/normal_5fc745c9027f3.pdfIn PDF document text
    • https://xefigokilevugez.weebly.com/uploads/1/3/5/2/135299251/naguvapitolivuni.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393022/normal_5ff3e9581d48d.pdfIn PDF document text
    • https://tujobofawoti.weebly.com/uploads/1/3/2/6/132695409/1722927.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451945/normal_5fd6476d3edda.pdfIn PDF document text
    • https://ximabetewu.weebly.com/uploads/1/3/1/3/131384229/4824407.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380700/normal_6027e29797c93.pdfIn PDF document text
    • https://lixojubenolida.weebly.com/uploads/1/3/4/3/134375882/dezavaxadi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382620/normal_5fc6589333f3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460688/normal_5feb28fa078bf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484169/normal_5fedd19f399ec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce70f680-b777-486a-ae8c-a2aa6eded1d6/fabuloz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08dd4fa0-4cfa-45a8-8505-488b82a51626/how_much_can_a_2010_ford_ranger_tow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cd1a035-a001-47d4-90f1-8a2994e4ac2e/bulovomatilit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b701cfd-49f8-4ae3-95e5-4d2c7be441d2/85840676952.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44c2621a-8dc5-4fb3-898e-89f68fbfe841/xowezawabo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0021e55-b1fe-48f9-89b1-59b23fc3c8f3/27489170845.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fed8108f-9f94-4a3b-9030-a5dba34bd770/fasusilupimujatep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c88eaa5-b321-444e-84ac-3ef093f16f39/62837961752.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db800a8b-3161-4066-8eb3-3662e800de51/26128141365.pdfIn 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC6 6536 bytes
SHA-256: c10938f23b3148a2b10b883b1b54d5872a143c900d879c806034b260b32aa5f2
font_01_sfnt_off0000fdf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF0 5836 bytes
SHA-256: f65e56032e4fad799658400ee342b9f2fa71202dbda8bfcaf086e738e2020c05
font_02_sfnt_off000111b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111B4 4452 bytes
SHA-256: 29485ad0dd39b6b48ec2fdcc5786bf255a2a2c6d7f1d8dbfc5cc1a8d26fb9ddc
font_03_sfnt_off00012190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12190 10612 bytes
SHA-256: e7a8a4dd77b6c6787f8823235e6f667faa14c379a916bd8400fee8c0c4ad1ebc