Malicious PDF — malware analysis report

Static analysis result for SHA-256 08301750bc7dae5b…

MALICIOUS

PDF

87.4 KB Created: 2021-03-22 05:33:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 7c5e13d1f1e696eed727510b23920c3d SHA-1: dded44029f74d0b75fbb2ef9550530d258f71b82 SHA-256: 08301750bc7dae5b504b7fc7155f5a222bccbcbff5620e1700050caa727a1c32
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though partially corrupted, suggests a lure related to recycling.

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://midufefew.ru/strik?utm_term=15%252B+reasons+why+we+should+recycle+more PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490366/normal_60376612f3fbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404497/normal_600f1f2393119.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467601/normal_5ff0320874934.pdfIn PDF document text
    • http://supernefritroller.xyz/71955614841vupbm.pdfIn PDF document text
    • http://fakts.design/stickman_hook_pcvzr1b.pdfIn PDF document text
    • http://hookup756.fun/zifedebewimonosixabelumu8f5p6.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/gozifep/kifep.pdfIn PDF document text
    • http://bofoputuweja.rf.gd/kunikusebuti.pdfIn PDF document text
    • http://manepiri.epizy.com/meloti.pdfIn PDF document text
    • http://lopumupukerodu.epizy.com/holland_code_careers.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/wowudimojutezizibeme.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/garmin_s60_approach_charger.pdfIn PDF document text
    • http://judajujogow.epizy.com/nebakuwesisawapawifexe.pdfIn PDF document text
    • http://kuderegeguf.epizy.com/gmp_training_material.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2160cf00-e6c7-446f-b97d-ae4b37a00dbd/does_cain_and_abel_have_virus.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/education_website_psd_templates_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fa87c2b-bb5d-4531-abe2-87f7f3cfa6f3/why_is_penelope_important_in_the_odyssey.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_off0001157d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1157D 5452 bytes
SHA-256: 587d394292b1adc035ecd4b3970f2191713a4f9c6fd53b0bfd73c392ef46b91b
font_01_sfnt_off000127fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127FA 11464 bytes
SHA-256: e95874c792e0798b24416b8ab9ed4f171cb1b0b062fd21f64b8d03ac67962991

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