Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b26c2584733caa2…

MALICIOUS

PDF

88.2 KB Created: 2021-02-22 15:16:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e3722c005f6d40e083bee4e2f6a7c2da SHA-1: 5f2c28f8cc6baac415eeb4ba933a545c4bf71028 SHA-256: 4b26c2584733caa2a3eb97487f0fac15cd775f37de6436567a81f5d3185d0453
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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/123?utm_term=toyota+corolla+2016+price+in+india PDF link annotation
    • https://lavupujewefi.weebly.com/uploads/1/3/4/6/134631736/gadevupitugadas.pdfIn PDF document text
    • https://vipomumukewa.weebly.com/uploads/1/3/0/8/130813786/1ecaad8639147f.pdfIn PDF document text
    • https://cdn.sqhk.co/dumotometapo/ihhbhcn/49238176968.pdfIn PDF document text
    • https://mekumago.weebly.com/uploads/1/3/5/9/135981587/vidadigogudupaxodito.pdfIn PDF document text
    • https://bawusazatodopam.weebly.com/uploads/1/3/1/3/131378774/maligigipegulu_xonezopadamate_jakaxedis_marolaxadepe.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
    • https://s3.amazonaws.com/niporofez/mailchimp_view_template_html.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/antivirus_android_gratis_sin_anuncios.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/anjaneya_movie_video_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/conspicuous_mistake_informally_crossword_clue.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/sivirusegusegenexuzu.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/fikejudo.pdfIn PDF document text
    • http://gotenekopibijo.epizy.com/fejozoripatix.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/vakuzanuzoz.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/bossypants_drive.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/king_size_fitted_sheet_only.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f860.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF860 5208 bytes
SHA-256: bdd69ad0384721db2365e2ac3695716fdac44d0bfe705a8a9c9e4500b159597c
font_01_sfnt_off00010a19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A19 10960 bytes
SHA-256: 0b897ff601ca806b92bdf620d8e7c0adb5c2bc7fe6c54f269d95dc43b5344da4
font_02_sfnt_off00012fba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FBA 16164 bytes
SHA-256: e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6
font_03_sfnt_off000144d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144D1 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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