Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f0d6857bd821004…

MALICIOUS

PDF

83.0 KB Created: 2021-03-18 11:11:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7398c8fa21ef389be92b2d6080b22123 SHA-1: 2d4fa99b2b3e55d08b2c106c3bf2312f23d00bfa SHA-256: 5f0d6857bd821004d6dc5a2a40fd3d7154c58d9ef739dcdd2120f780e1ecbf2c
176 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for link farms and phishing. The ML classifier and ClamAV detection strongly indicate maliciousness. The embedded URL 'https://maypoin.ru/wix?keyword=bella+nutripro+cold+press+juicer+manual' suggests a lure to a site that may host further malicious content or phishing forms. No scripts were extracted, but the PDF structure itself is weaponized to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • PRC/3D content in PDF medium CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • 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://maypoin.ru/wix?keyword=bella+nutripro+cold+press+juicer+manual
    • https://cdn-cms.f-static.net/uploads/4466146/normal_60228eddb6b99.pdf
    • https://static.s123-cdn-static.com/uploads/4444655/normal_5ff3566c9876e.pdf
    • https://static.s123-cdn-static.com/uploads/4419827/normal_5fe3eca0500e1.pdf
    • http://zatutajijiti.getenjoyment.net/janirolajesifiwalaj.pdf
    • http://vumajufeboxidik.mywebcommunity.org/rimogetogugodufevosi.pdf
    • https://static.s123-cdn-static.com/uploads/4468571/normal_6005c3814c0fe.pdf
    • https://bojijoda.weebly.com/uploads/1/3/5/3/135325587/1db34e16e45.pdf
    • https://japapetokanov.weebly.com/uploads/1/3/1/4/131454126/vudexe_bebin_xapax.pdf
    • https://cdn-cms.f-static.net/uploads/4411686/normal_602dab95bde32.pdf
    • https://bixuduserar.weebly.com/uploads/1/3/4/8/134861961/6081071.pdf
    • https://cdn-cms.f-static.net/uploads/4444636/normal_603a5aab257b5.pdf
    • https://static.s123-cdn-static.com/uploads/4502493/normal_60037211e52b3.pdf
    • https://static.s123-cdn-static.com/uploads/4459059/normal_5fe3d893d95c9.pdf
    • https://static.s123-cdn-static.com/uploads/4368732/normal_5fed2d4b220fa.pdf
    • http://kazotapojiwi.mywebcommunity.org/37142706847.pdf
    • https://static.s123-cdn-static.com/uploads/4447098/normal_5ff65f27125fe.pdf
    • https://static.s123-cdn-static.com/uploads/4486969/normal_5fceb1981c049.pdf
    • https://cdn-cms.f-static.net/uploads/4386597/normal_60119fde1bbaa.pdf
    • https://junobinedutuki.weebly.com/uploads/1/3/2/7/132712306/daded74.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/ximupuv/53612126216.pdf
    • http://palelezugob.onlinewebshop.net/john_creswell_research_design_5th_edition.pdf
    • https://s3.amazonaws.com/rilexazejuzovep/worojopuxek.pdf
    • https://s3.amazonaws.com/bisapovepizaj/15038413062.pdf
    • https://s3.amazonaws.com/fenatagazise/hindu_funeral_invitation_template_free.pdf
    • http://tosurok.myartsonline.com/siserafabebonipebabix.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_off0001024d.bin
f96d4bbb6f5f4cb039f3e18f55ab6db00749679527d37d54514c0b1862fa19f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1024D 5344 bytes
font_01_sfnt_off00011461.bin
3c8457742810dd9f0896770ebbfc95486d27bf892fc5b6c63757c260092c4429		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11461 11904 bytes

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