Malicious PDF — malware analysis report

Static analysis result for SHA-256 286c6063362e82f2…

MALICIOUS

PDF

99.2 KB Created: 2021-02-05 17:56:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: ad4e022bd32e3e813ee3a18baa8001e3 SHA-1: 9470b29777579a8e1d530df2227dc11f5911e69f SHA-256: 286c6063362e82f2285cb92438bfa37d1b29c6f80fa408522ce605977f833790
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, suggesting it is part of a link farm or phishing campaign. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. The embedded links likely lead to further malicious content or exploit kits, aiming to compromise the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://maypoin.ru/wb?keyword=maharashtra%20caste%20list%20pdf%20in%20marathi%202019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418567/normal_5fe9c4b6a6a53.pdfIn PDF document text
    • https://pexafibilo.weebly.com/uploads/1/3/4/4/134484824/gazonifojiz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376874/normal_6002e6a47bc9c.pdfIn PDF document text
    • https://nizerekudoni.weebly.com/uploads/1/3/5/3/135383630/tezavabidunevumu.pdfIn PDF document text
    • https://cdn.sqhk.co/natefisaka/AhCrEhf/milusorodonexabuwufoviti.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383928/normal_5ffa244469860.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365628/normal_5fc596653ec69.pdfIn PDF document text
    • https://forupiwiwipugo.weebly.com/uploads/1/3/5/3/135349306/voteniwaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503692/normal_60026e22ade8d.pdfIn PDF document text
    • https://vogoniboka.weebly.com/uploads/1/3/1/0/131070279/dufosujasoxum.pdfIn PDF document text
    • https://xegadoponuxi.weebly.com/uploads/1/3/0/7/130775279/kunidada_bakuja_momilejozane_milogi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452588/normal_5ffb592a44707.pdfIn PDF document text
    • https://puziwifatewir.weebly.com/uploads/1/3/4/7/134715637/1527851.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxafopagad/egh1hbw/liwilatinujuvorubawefole.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489993/normal_6004e6b3bfc8b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/kobe_beef_japan_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/siwilutekoxomumu.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/57310763588.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/bedsheet_toga_female.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/livros_de_botanica_gratis.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000138c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x138C5 21540 bytes
SHA-256: 3eb5992d85f09646a6541416354b109b8bde37d8db2ecda2567495ace71f0237
font_00_sfnt_off0000ff46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF46 5884 bytes
SHA-256: de101b6a549df48e6714d80a19123a3df76226797f97cf28b2a9b9b12a711225
font_01_sfnt_off00011333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11333 10968 bytes
SHA-256: 83c7e43eadf69927692a178d927b04f4ffdd38f538acc9e34538e37381aa4121
font_03_sfnt_off00015cd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15CD7 10712 bytes
SHA-256: ebb51db5d57049a7d6237254b8898b3d3262012fd0bc2e5d229bf2bf51781f7d

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