Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ea99675308590b…

MALICIOUS

PDF

69.4 KB Created: 2021-02-13 10:50:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 96196150d84cb4f2d037c2cbdd113179 SHA-1: cfe8b6f959cfe1f96c438c5a58bd35705280de88 SHA-256: f8ea99675308590bd77cb842c81983afb79a672b6b8bd333144843bbce9eba52
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a critical heuristic firing for ClamAV detection. An external URI pointing to 'jottigo.ru' was extracted, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text that appears to be a song title, likely used as a lure. No scripts were extracted, but the PDF structure and external URL indicate a phishing attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/aws?utm_term=akele+hain+chale+aao+song PDF link annotation
    • https://cdn.sqhk.co/bamopilu/jajbiaC/66601557921.pdfIn PDF document text
    • https://cdn.sqhk.co/sixajuzap/dM3Z6je/syberia_walkthrough_aralbad.pdfIn PDF document text
    • http://ubsvp.com/pradhan_mantri_awas_yojana_gramin_application_form_2018io0vh.pdfIn PDF document text
    • http://universityru.fun/constellations_nick_paynewz376.pdfIn PDF document text
    • https://cdn.sqhk.co/wusezofetib/fgjibI2/linear_pair_definition_with_diagram.pdfIn PDF document text
    • https://cdn.sqhk.co/kewusikata/KgdIQgc/bumolajipebureguj.pdfIn PDF document text
    • https://cdn.sqhk.co/xafigozenusu/hfCMidz/8977887231.pdfIn PDF document text
    • https://cdn.sqhk.co/femuzetoj/j5Jjfjg/free_online_homeschool_curriculum_uk.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/lomogas/welurapos.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/limiting_factors_carrying_capacity_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/ansible_terraform_module.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/neurofibromatosis_tipo_1_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/meri_bamani_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/annoyance_crossword_puzzle_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/green_card_photo_composition_template.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD265 5016 bytes
SHA-256: 9c0a8628f14e9dda7d816dcb468ff442db0ca3998cd11da376c3dcdec505b631
font_01_sfnt_off0000e377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE377 11512 bytes
SHA-256: 2700e5c75008f14a6722f28123863e8b507ec7a710f5c53f31ebb474ec7b7add

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