Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbb44e2e295b807f…

MALICIOUS

PDF

84.7 KB Created: 2021-04-23 16:46:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: fe92e10da95ca80fb948979fee9d63ce SHA-1: d54f337839ac9f3fb162f8c9c82325fee8021664 SHA-256: bbb44e2e295b807ffcb59ed82e6d35999f02d3aada499cb437939e33728d5033
156 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by ML classifiers and ClamAV. It contains a large number of external links, indicating it is part of a link farm designed to redirect users to other resources. The primary malicious URL points to a domain that appears to be involved in SEO manipulation, suggesting a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/strik?utm_term=diccionario+de+espa%25C3%25B1ol+a+ingles+traductor PDF link annotation
    • https://ritipovilij.weebly.com/uploads/1/3/4/6/134650849/meliwaramu-fixadetubutegik-sodojo-wajobepaf.pdfIn PDF document text
    • https://sawuwirepugasup.weebly.com/uploads/1/3/0/9/130969548/982711.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404964/normal_606319643ff22.pdfIn PDF document text
    • http://mulakaxem.iblogger.org/janituzanix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466680/normal_600993cf0125a.pdfIn PDF document text
    • https://zajadibagaku.weebly.com/uploads/1/3/5/3/135341716/43d79456c7.pdfIn PDF document text
    • http://leninuludobodu.mygamesonline.org/47866329489.pdfIn PDF document text
    • https://xanuzejo.weebly.com/uploads/1/3/1/6/131637194/tobufugijavuvopuvu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384167/normal_5ffecdf925c19.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/what_are_some_social_problems_of_vulnerable_populations.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/52281689625.pdfIn PDF document text
    • http://gekolutewubel.myartsonline.com/dictionnaire_informatique_anglais_franais.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/37225046046.pdfIn PDF document text
    • http://dijipola.onlinewebshop.net/ellipse_algorithm_in_computer_graphics.pdfIn PDF document text
    • http://pufovipejofag.epizy.com/audio_editor_android_app.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/9562878696.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/my_family_and_other_animals_tv_series.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/jumpoff_jo_crib_sheets.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
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE754 5452 bytes
SHA-256: e33cddf13c64277795f46f25e0dae862cbaa2d83f093729b4bdcf9be8d4e7157
font_01_sfnt_off0000f9a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A6 4284 bytes
SHA-256: 97ed5ae0bcdfc4f3848e1636c4da95c86045faf87e7c7035610163f6455c0058
font_02_sfnt_off0001052b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1052B 12508 bytes
SHA-256: b24daffbb5bfdef8192c8a79b16c7e9fd4e6e9553a057f06f1b4ea17887cc9ea
font_03_sfnt_off00012d9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D9E 16092 bytes
SHA-256: 0ce4f8b47c9991bd1ed0a694d919b88134844ea7ba04d4b6a373289a8b5175c0

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