Malicious PDF — malware analysis report

Static analysis result for SHA-256 1da21b65c8413075…

MALICIOUS

PDF

110.7 KB Created: 2021-03-14 00:25:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8289949fd908b4528deebd1a9cc9b1c8 SHA-1: 9a154082c8f244f245bde228bc869f2b863cd909 SHA-256: 1da21b65c841307528fd541afedc1e0940385c63131d9b54f9bb0197aa73b341
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm designed to attract traffic related to "lords mobile hack apk ios". The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware download sites. The presence of embedded URLs and the link farm heuristic suggest a phishing or content-luring attack pattern.

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://resalured.ru/wix?keyword=lords+mobile+hack+apk+ios
    • https://bilugejedegigel.weebly.com/uploads/1/3/4/0/134017605/dimopowi-ketitimebebup.pdf
    • https://nefotinabe.weebly.com/uploads/1/3/5/3/135314884/motekarowamukubu.pdf
    • https://joriwonakogilul.weebly.com/uploads/1/3/5/3/135305945/e1504ebb1bb81.pdf
    • https://cdn.sqhk.co/gixedomawa/JggJ1nB/94158750391.pdf
    • https://cdn.sqhk.co/nakizenonetu/ijxhchj/32157862109.pdf
    • https://pubogovivewata.weebly.com/uploads/1/3/2/3/132302724/satunefogirifulup.pdf
    • https://cdn.sqhk.co/xegunorasu/ibghjME/extreme_driving_simulator_mod_apk.pdf
    • https://cdn.sqhk.co/rebiguta/EhgPiaW/word_cross_swipe_spell_check.pdf
    • https://cdn.sqhk.co/fojevimexu/jb8u2hi/debebelebaxogo.pdf
    • https://wilulesutazi.weebly.com/uploads/1/3/3/9/133997377/757f39fee.pdf
    • https://volikupiwete.weebly.com/uploads/1/3/4/6/134676366/sopanofo-beged.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/satedafadusizo/fedivifidopakalopetakubi.pdf
    • https://c31d65df-273c-4bcc-acfb-7b03b0724b99.filesusr.com/ugd/e7e4a0_3c98c82ac4b74c41b4ce9886cc686fb7.pdf?index=true
    • https://0ed7c29b-d5f2-4290-8b47-add6aa38300d.filesusr.com/ugd/32a223_22f84fec0b744c1085ae0f1c568b4c11.pdf?index=true
    • https://c1d61d78-9bae-425c-b347-ee91470fe4f1.filesusr.com/ugd/60933b_61cf1067c52b439daca12473e535cfeb.pdf?index=true
    • https://s3.amazonaws.com/bisapovepizaj/44053000242.pdf
    • https://40785fcd-1e5e-4316-9306-5db1d5795eae.filesusr.com/ugd/2f07a1_5c074bc4fb544836909211e73c8d575b.pdf?index=true
    • https://238a82c5-85a8-4641-a991-2f0f5270ddc4.filesusr.com/ugd/63f22d_831d11cd7e194d84ab4fb0eb5cb68484.pdf?index=true
    • https://933afb0c-60ca-4ff4-ba38-e7c804ca925d.filesusr.com/ugd/941881_9a336bb58c8a409ab64334352f4aa0ac.pdf?index=true
    • https://50037ee0-0691-4a53-bdc2-b2f8f795cfa6.filesusr.com/ugd/b41a9a_91a18be3984a42559f361e540dc182a2.pdf?index=true
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014dd8.bin
80bc3401cf683ad85ef31d60459c9e049d2fc465ad2cb29865b7611fa3349f0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14DD8 5456 bytes
font_01_sfnt_off00016032.bin
afd5857a48a81c7356cf52a6b06686472a71114c6e27b4a818969d9cbad02169		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16032 20940 bytes
font_02_sfnt_off00019838.bin
60f53b17f7925ac1818ac9336ea58fd206fea48872b5377b70e6fb8114080afd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19838 16132 bytes

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