Malicious PDF — malware analysis report

Static analysis result for SHA-256 199eeae3bc5e28ad…

MALICIOUS

PDF

72.7 KB Created: 2021-02-14 06:16:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: fc3c2e16575ef6cac956be387a6d2e3f SHA-1: d3aa21371f54b231d7d75b98e27225d55d867a1c SHA-256: 199eeae3bc5e28ad7f47f3000c8ffbfe0d7c4a5415c7cfc00bcaf086a16dfe60
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://yafferge.ru/wix?keyword=estados+de+agregacion+de+la+meteria'. This URL is likely used to deliver a malicious payload or phish for credentials. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains text related to 'Estados de agregacion de la meteria' and application information, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/wix?keyword=estados+de+agregacion+de+la+meteria In PDF document text
    • https://static.s123-cdn-static.com/uploads/4417403/normal_5ff2a5f4724ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451556/normal_60062b62a5090.pdfIn PDF document text
    • https://zazafiwizodizi.weebly.com/uploads/1/3/4/0/134041258/401039.pdfIn PDF document text
    • https://mowolonob.weebly.com/uploads/1/3/4/8/134874237/maxofonariguvonok.pdfIn PDF document text
    • https://cdn.sqhk.co/boxokozofe/ib80wKQ/duck_hunt_dog_shot_gif.pdfIn PDF document text
    • https://nejuxudukekiti.weebly.com/uploads/1/3/0/8/130874136/b1b35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383791/normal_60192e5d38cfc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422134/normal_6010795dc7665.pdfIn PDF document text
    • https://bupuzufemu.weebly.com/uploads/1/3/1/4/131452870/gotur_taladera_vowipopitusej.pdfIn PDF document text
    • http://nisaledax.iblogger.org/67230655655.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446035/normal_6006805766574.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371005/normal_5fd082dbe170e.pdfIn PDF document text
    • http://cmbclientes.com/wizapi10dn3.pdfIn PDF document text
    • http://christinaanddavid2019.com/copper_mt_colorado_snow_report9pe2x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449777/normal_6022673f243d9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tamupevex.rf.gd/traits_genes_and_alleles_study_guide_b.pdfIn PDF document text
    • http://mubadel.epizy.com/59799467046.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_off0000dd43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD43 5216 bytes
SHA-256: b89afbe4ffe5c3521a200ce1eaba3ef01e09dc37efab4d87c713f9bf77abf23f
font_01_sfnt_off0000eeef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEEF 11592 bytes
SHA-256: 93b4e76955fa9cdfca7377031a53484b74540efdb946bc1a9e3b3ac6a5a26936

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