Malicious PDF — malware analysis report

Static analysis result for SHA-256 089a1c2ce93b0fd2…

MALICIOUS

PDF

73.6 KB Created: 2021-02-14 18:03:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4a9cbde0b024cc696108f977a83bcdec SHA-1: e7c2b182e3c4788a3339d52c8a0e5329c8b3e6e7 SHA-256: 089a1c2ce93b0fd2ff99379841cf12ad3114d312f679851b653394384f0ee9d4
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier and ClamAV also flagged this file as malicious. The embedded URL is likely intended to lead the user to a phishing site or to download a secondary payload.

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/123?utm_term=the+sky+is+everywhere+movie In PDF document text
    • http://xonajolonifimo.22web.org/abominable_snowman_of_pasadena.pdfIn PDF document text
    • https://xazebuwojij.weebly.com/uploads/1/3/4/4/134467588/38220f908.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459477/normal_6003d1cee4075.pdfIn PDF document text
    • http://jazeforip.22web.org/tisubasipaditu.pdfIn PDF document text
    • https://revixapega.weebly.com/uploads/1/3/4/6/134619396/kipusivogusexur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489740/normal_60143a479a076.pdfIn PDF document text
    • https://gamekesilib.weebly.com/uploads/1/3/4/8/134892139/833f85d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zapesuxeliribi.rf.gd/mhw_charge_blade_tree_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/28222581324.pdfIn PDF document text
    • http://gigitepusiligo.epizy.com/music_er_website_for_pc.pdfIn PDF document text
    • http://tirinito.epizy.com/girerusuvafojulemasafuk.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/auto_transformer_starter_diagram.pdfIn PDF document text
    • http://tisajepi.epizy.com/bagogujido.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/samsung_android_games_free_apk.pdfIn PDF document text
    • http://suferipuwa.epizy.com/89051892713.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/34414510168.pdfIn PDF document text
    • http://pemukusa.epizy.com/dmso_sds_sheet.pdfIn PDF document text
    • http://gizogebinide.rf.gd/bejeb.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_off0000e410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE410 4952 bytes
SHA-256: 3407c337390dd4d6f2021396ff2415853f41fce4ef8d2cae3856c74d0f0de5a7
font_01_sfnt_off0000f4d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D9 10580 bytes
SHA-256: 7329816dc76fd87d0376b656c860a0bddc93448cf3fbfb12361ca912ecf64387

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