Malicious PDF — malware analysis report

Static analysis result for SHA-256 d287958112cd929d…

MALICIOUS

PDF

78.5 KB Created: 2021-03-07 07:16:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: cc5a91a0bb916be246e7a1aabd682fcc SHA-1: f724ae9ce13357ef3a6106ab75be20ab12389f5e SHA-256: d287958112cd929d42a69d6fd0a05557622a3139acd7da555ef2a9f430f0496e
156 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a link farm and a phishing attempt, directing users to external URLs. The embedded content, though obfuscated, suggests a lure related to 'Mario kart wii mods list'. The presence of numerous external links, including a suspicious one to 'gimoguvi.ru', strongly suggests an attempt to redirect users to malicious sites for further exploitation or phishing. No scripts were extracted, but the overall structure and URL patterns are indicative of a malicious PDF designed for user redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/wix?keyword=mario+kart+wii+mods+list PDF link annotation
    • http://xamoxipuwizutux.scienceontheweb.net/16252500477.pdfIn PDF document text
    • http://zonerokemub.getenjoyment.net/vifimujomaki.pdfIn PDF document text
    • https://nuzoligul.weebly.com/uploads/1/3/3/9/133997434/cf2d63d.pdfIn PDF document text
    • http://zazorin.scienceontheweb.net/how_to_use_new_hermes_engravograph.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420020/normal_603f0f949949e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446034/normal_5ffbb05571748.pdfIn PDF document text
    • http://lobulezinovux.medianewsonline.com/54991562277.pdfIn PDF document text
    • https://nujuwededewomoj.weebly.com/uploads/1/3/4/3/134305400/5ef9a04.pdfIn PDF document text
    • https://wovupidej.weebly.com/uploads/1/3/4/6/134687137/6954217.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460694/normal_5fe4b9c8adfb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409614/normal_5fd2eabf7f31c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sikuva/97121237877.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/73974285841.pdfIn PDF document text
    • https://19972ee8-34f0-4900-8009-9f590161cd02.filesusr.com/ugd/64db51_a36b567fa73f4612abb8c28df22fb05d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/muluduz.pdfIn PDF document text
    • https://97783159-ced7-426e-9fbd-60d2bb3342fb.filesusr.com/ugd/00058f_8e8855f9d2bc47d79de51e47f105ee45.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/buwilededujaxidox.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/lodasozumivunifezupudus.pdfIn PDF document text
    • https://d21da297-2d1c-4020-882f-059d99c29dc9.filesusr.com/ugd/3724a2_e4965ceef4164a6aba93fbc17b4321f1.pdf?index=trueIn PDF document text
    • https://2a497570-3881-454f-aefc-229a18bbdf22.filesusr.com/ugd/83e24f_c521489ee11c44de9eae027e35f669b0.pdf?index=trueIn PDF document text
    • http://sogivuwe.onlinewebshop.net/flujo_de_materia_y_energia_en_los_ecosistemas_ppt.pdfIn PDF document text
    • https://6184de0c-c318-42a7-882e-c5ddc63b817d.filesusr.com/ugd/1c8c1e_362ea7d1882c4f6fbcfd65480416c9de.pdf?index=trueIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF699 5132 bytes
SHA-256: 570633de5b12d2e54f19b44f9d319b796db80c9c6ce2c4768205fad8026af380
font_01_sfnt_off00010816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10816 10604 bytes
SHA-256: a1286645d7fbbebeb7a40fcd911515da0156f0ec1f32e6071caf0283753cea7d

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