Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7447f8e193df670…

MALICIOUS

PDF

87.3 KB Created: 2021-03-03 23:31:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a8cadba43c332d215f10e1787cdb1564 SHA-1: e49e1ca167371519042e629e80b3397b6c74c691 SHA-256: c7447f8e193df67058c0fc72bc65b9ae0aeb7637fcfbdf48d5124a583a136631
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 5

  • 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.
  • 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://mezovuduw.ru/award?keyword=fishing+quick+knot+tying+tool+video PDF link annotation
    • https://natufebopod.weebly.com/uploads/1/3/4/3/134305275/dikiru.pdfIn PDF document text
    • https://falojaba.weebly.com/uploads/1/3/0/7/130776150/78c861b877c95.pdfIn PDF document text
    • https://pibigetikuke.weebly.com/uploads/1/3/5/3/135387636/mosoroximutoj-miwokamepefa.pdfIn PDF document text
    • https://munelexogetajax.weebly.com/uploads/1/3/1/4/131437313/73f1fcdaa4.pdfIn PDF document text
    • http://rorezorejadij.iblogger.org/hannah_arendt_sobre_la_violencia.pdfIn PDF document text
    • https://lemusovigezamo.weebly.com/uploads/1/3/1/3/131381045/8022680.pdfIn PDF document text
    • https://cdn.sqhk.co/xoguvamev/gLmhfxY/33316092310.pdfIn PDF document text
    • https://potepivogatofef.weebly.com/uploads/1/3/2/7/132740463/xevaluluremilo.pdfIn PDF document text
    • https://zibakuponitek.weebly.com/uploads/1/3/5/3/135303957/jojunadetot_xaderas.pdfIn PDF document text
    • https://guzokilib.weebly.com/uploads/1/3/2/7/132741743/lajadelagemugal_xoremegitajiris_nabofoti_kamakiz.pdfIn PDF document text
    • https://cdn.sqhk.co/fazovivum/pjaiUjg/98893444094.pdfIn PDF document text
    • https://gebovobavafol.weebly.com/uploads/1/3/1/4/131406715/jegijedusajaf_simevatexa_dozeved.pdfIn PDF document text
    • https://cdn.sqhk.co/jomawutid/geZ89gc/capstone_project_ideas.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/nagev/tivimupuferevij.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/cisco_ucce_finesse_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/19291005677.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/50688828056.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/59136768608.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/57406890592.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/integer_word_problems_answer_key.pdfIn PDF document text
    • http://loxosufodu.epizy.com/basara_3_pc_tanpa_emulator.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/1In 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_off00011902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11902 5204 bytes
SHA-256: 327bf2e223ebb205e503a19a0b40bf3ea22b1f11e8c09872c66938db2ddd2e2c
font_01_sfnt_off00012ac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AC5 11060 bytes
SHA-256: b21d6166cb247923696c67ffcf73109ce8218afb5212765ca9dd00172ea1e5dd

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