Malicious PDF — malware analysis report

Static analysis result for SHA-256 15d01ffc01512f08…

MALICIOUS

PDF

71.4 KB Created: 2021-03-08 04:58:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b9997259e45a8cb0832d93c204beffc SHA-1: 9bb5ce242ba7a74ba3171eebb1db4239ad9ef0a4 SHA-256: 15d01ffc01512f08771bae5bdf3ee65c367d61846fdfe674f14c95a3bae190dd
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, a technique often used for SEO manipulation or to distribute further malicious content. The embedded URL 'https://zajinet.ru/strik?utm_term=focus+daniel+goleman+pdf+free+download' suggests a lure related to downloading a PDF, which is consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/strik?utm_term=focus+daniel+goleman+pdf+free+download
    • http://lixixivukagoda.66ghz.com/hangout_apk_for_windows_10.pdf
    • https://cdn-cms.f-static.net/uploads/4460247/normal_603e7761e2959.pdf
    • https://fiwigerisen.weebly.com/uploads/1/3/1/4/131408459/f767c2eebca7c54.pdf
    • https://cdn-cms.f-static.net/uploads/4456377/normal_5fd193507126c.pdf
    • https://nelolepi.weebly.com/uploads/1/3/4/3/134355236/828654.pdf
    • https://wazalopa.weebly.com/uploads/1/3/0/8/130814586/temixigo-jebil-bezowiviwarugeg-futepabividedij.pdf
    • http://kerutugizuxig.mygamesonline.org/how_true_is_into_the_wild_movie.pdf
    • https://cdn-cms.f-static.net/uploads/4367305/normal_601f082232732.pdf
    • http://mupogizarazo.iblogger.org/bsc_agriculture_online_admission_form.pdf
    • http://dakolozen.22web.org/1661862286.pdf
    • https://static.s123-cdn-static.com/uploads/4502493/normal_5ff2f7368d36e.pdf
    • https://tivepikilusu.weebly.com/uploads/1/3/4/7/134759048/67f5da7a4ba24.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mejados/puditim.pdf
    • https://s3.amazonaws.com/dojonuta/banner_saga_2_apkpure.pdf
    • https://s3.amazonaws.com/xafaxotaful/17218549232.pdf
    • http://rezekov.rf.gd/are_smart_weighing_scales_accurate.pdf
    • https://s3.amazonaws.com/bulujono/udemy_videos_free_site.pdf
    • http://tukabawibuge.rf.gd/xasitepaxewerejija.pdf
    • http://kakasis.onlinewebshop.net/how_many_months_is_nigeria_navy_training.pdf
    • http://lejuwugumiwa.epizy.com/personal_finance_template_excel.pdf
    • http://juvujiliso.epizy.com/afro_brotherz_album_zip.pdf
    • https://s3.amazonaws.com/fuwawibu/exercises_past_simple_questions.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d83a.bin
0e864911f8297d6da2a2f55d5f8e171137d66d1428687eec8dc66529a964b54c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD83A 5520 bytes
font_01_sfnt_off0000eb0a.bin
90e9b92917dc0459af26372960398c6ff3482f194e25c31bc7bf5dcee4ebac85		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB0A 11120 bytes

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