Malicious PDF — malware analysis report

Static analysis result for SHA-256 6904e529380faef5…

MALICIOUS

PDF

73.4 KB Created: 2021-02-18 21:40:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 941a0d187547b8374ec5d2c14119cb0f SHA-1: dc1b3666f312903e3fe89b41a14dc28809a3880e SHA-256: 6904e529380faef5c57cdf9ca6be2f80d5c5fff96703ddd87803af401a4ee059
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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/strik?utm_term=how+to+make+a+low+sodium+taco+seasoning In PDF document text
    • http://shoop-fn.ru/what_are_human_valuesma9bj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412568/normal_5fc91298b580d.pdfIn PDF document text
    • https://fofifiso.weebly.com/uploads/1/3/4/6/134613093/1814326.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474727/normal_60034ae23571a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420586/normal_5fc92d7bbc06c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444369/normal_601974b953661.pdfIn PDF document text
    • http://peuer.xyz/6008563495538ehm.pdfIn PDF document text
    • https://kuburabet.weebly.com/uploads/1/3/4/3/134362545/xudavofiwupobukux.pdfIn PDF document text
    • http://pugajuxo.iblogger.org/windows_10_latest_version_1903_iso.pdfIn PDF document text
    • http://sarhello.online/xebunomez5znz3.pdfIn PDF document text
    • https://zugimawaxudal.weebly.com/uploads/1/3/1/4/131410952/7659500.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494429/normal_602cddcb2ba61.pdfIn PDF document text
    • https://tigewatujuw.weebly.com/uploads/1/3/0/7/130738543/3787597.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465685/normal_5feea79abe5c9.pdfIn PDF document text
    • http://reduslimitalia-official.site/composite_sketch_looks_like_reporteruvtih.pdfIn PDF document text
    • https://fenatinuzari.weebly.com/uploads/1/3/5/3/135314561/zezazif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://giduzorim.epizy.com/94600703394.pdfIn PDF document text
    • http://benuniwutaferaz.epizy.com/86359526910.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d69a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD69A 5164 bytes
SHA-256: 0a74802c4deb2f27fde2e6c0e68bcf8007185a65d7207cc6e1ba263b2c51b1a2
font_01_sfnt_off0000e822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE822 10060 bytes
SHA-256: 4d6e9f103d32ae32bb7b891accbe8774c9dfe3f0edd8f125d340cf73eb47624c
font_02_sfnt_off00010a9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A9F 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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