Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e0de64b3ca701d2…

MALICIOUS

PDF

86.5 KB Created: 2021-05-08 12:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87efbead166419d4cee37d5d29b58a72 SHA-1: 689931112e0ac57d60c5ba9c8cceef9750252e95 SHA-256: 2e0de64b3ca701d27a42289fb6ba8ab8a0d6a1c9e68d548c6cc4dd093cdbf7fa
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains a large number of embedded external links, with one pointing to a suspicious URL that appears to be part of a link farm or phishing campaign. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external links suggest an attempt to redirect users to malicious content, potentially for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/strik?utm_term=how+many+percy+jackson+and+the+olympians+movies+are+there
    • https://cdn-cms.f-static.net/uploads/4470385/normal_601dc693409cb.pdf
    • https://sizokagijabid.weebly.com/uploads/1/3/4/6/134652394/1f42f54bc0.pdf
    • https://zorovapi.weebly.com/uploads/1/3/2/3/132303286/8308423.pdf
    • https://jirewolekaza.weebly.com/uploads/1/3/4/3/134387643/306d4d401c.pdf
    • https://zowadite.weebly.com/uploads/1/3/1/3/131380399/nimekosaxare-ditoruze-mokafakuxev.pdf
    • http://shtangelkipokupkiitd.online/the_little_prince_summary_chapter_1-108a562.pdf
    • https://static.s123-cdn-static.com/uploads/4379363/normal_5ff597bfb069d.pdf
    • https://cdn-cms.f-static.net/uploads/4423454/normal_5fd0dbadabe7b.pdf
    • https://pudexaxetodeli.weebly.com/uploads/1/3/2/6/132683251/kizewuloxagun-pakoduga.pdf
    • https://zomoxiwoginu.weebly.com/uploads/1/3/1/6/131637743/8884069.pdf
    • http://voiprormul.xyz/wejuruditipivije4yx7i.pdf
    • https://vevumugenewasu.weebly.com/uploads/1/3/0/7/130776279/pefetisis_gibakune.pdf
    • https://static.s123-cdn-static.com/uploads/4476416/normal_600547b6730e2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/navoburarovada/website_to_movies_on_android_phone.pdf
    • https://s3.amazonaws.com/lakadutof/how_many_books_nicholas_sparks_has_written.pdf
    • https://s3.amazonaws.com/fadobirak/alcatel_insight_cell_phone_case.pdf
    • https://s3.amazonaws.com/falufusu/once_minutos_paulo_coelho_libro_completo_gratis.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_off00011195.bin
b4cff6ca00914bd553d63e3015aee89164393b4c6ade6d3a27387c31db32e833		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11195 5668 bytes
font_01_sfnt_off000124ca.bin
3cacc195e19088df6fc0cbcae0233dbaf22be25b224f0fae57df161018a33e32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124CA 11628 bytes

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