Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e48f41b1c76bbdf…

MALICIOUS

PDF

76.4 KB Created: 2021-04-05 00:56:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f5185296ba7f375513861a87966a2557 SHA-1: d01d3052927f065bcab9bb5d99bd96273d077a6b SHA-256: 6e48f41b1c76bbdf9c4c6e7b42f592ff3c03e295d2d8cda2fdc77299b8baa6e4
156 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of the primary URLs, 'https://ponafet.ru/wix?keyword=yeh+hai+mohabbatein+22nd+april+2018+written+update', suggests a potential phishing or spamming attempt disguised as content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ponafet.ru/wix?keyword=yeh+hai+mohabbatein+22nd+april+2018+written+update
    • https://dixonojobu.weebly.com/uploads/1/3/3/9/133997274/gitafukagaxog.pdf
    • https://kigijogi.weebly.com/uploads/1/3/4/7/134702755/600013.pdf
    • https://cdn-cms.f-static.net/uploads/4403804/normal_605d95fcee487.pdf
    • https://dolivosogokate.weebly.com/uploads/1/3/0/8/130874088/8433586.pdf
    • https://dedaxasufebix.weebly.com/uploads/1/3/0/7/130775271/b9b73f.pdf
    • https://cdn-cms.f-static.net/uploads/4449769/normal_602d42f830593.pdf
    • https://danevetiwa.weebly.com/uploads/1/3/4/6/134600357/9267956.pdf
    • https://puxosuloboja.weebly.com/uploads/1/3/4/6/134677226/kedakatixizu-nenogu-podekaranijer-waxojalow.pdf
    • https://vuverararusug.weebly.com/uploads/1/3/4/8/134883490/xidima.pdf
    • https://pisaxegeb.weebly.com/uploads/1/3/0/7/130775455/2cd3cc.pdf
    • https://mutazodot.weebly.com/uploads/1/3/0/8/130874237/noguwesexozex-kikige-kuzajene.pdf
    • https://likerediweraj.weebly.com/uploads/1/3/4/6/134691167/f658f6bb726f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jefobexapulow/how_do_i_apply_for_disability_benefits_in_canada.pdf
    • https://s3.amazonaws.com/gulapore/stamford_alternator.pdf
    • https://s3.amazonaws.com/ganubifirigevi/69722054657.pdf
    • https://e97408dc-4b05-4e3b-9f19-f4127feb49ef.filesusr.com/ugd/a42eed_519c494879ac4280843cb2a944610855.pdf?index=true
    • https://s3.amazonaws.com/salosibejodod/zegag.pdf
    • https://03df74f7-894d-4c84-999e-da2b33eb06f5.filesusr.com/ugd/4c7733_1c9c3eaf67124ffeafe84f17185ea754.pdf?index=true
    • https://01dc7cc6-b8ed-446e-8cc8-1ad78882ed38.filesusr.com/ugd/e23fbb_d6a3229a285244508cfd5009a07009b8.pdf?index=true
    • https://s3.amazonaws.com/wutezigojuxi/jimodafudazobizo.pdf
    • https://s3.amazonaws.com/tobito/75865794693.pdf
    • https://s3.amazonaws.com/rufonali/pipe_insulation_thickness_guide.pdf
    • https://s3.amazonaws.com/gowebabuxogiro/71862324944.pdf
    • https://f4dd034e-00c7-465c-b850-fb2d75accad5.filesusr.com/ugd/769f78_ab329df7e19e4b5b80f82d281014c1c9.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eea2.bin
0b3d93937b17e95ce9d0de8a2d586575214a6087c3d7e5cef8f7cee8ad9323b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA2 5732 bytes
font_01_sfnt_off00010206.bin
4b2e7402cb45d6e2f11f29e53fc28fc65e70b633f182de2574842da4eb0b1f08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10206 9756 bytes

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