Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2d5803fb54c2c71…

MALICIOUS

PDF

66.9 KB Created: 2020-12-16 22:40:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 04118bf8f6ab1c98fffe26db83f66458 SHA-1: da374c5370724c538bbfbaad0c1d275cf94b2dba SHA-256: e2d5803fb54c2c71f3e44cd08bf59634701d164e9b33061eb5bf377271d99dbf
154 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical finding for a PDF redirector link to ggtraff.ru. The ML classifier also strongly flagged the PDF. The embedded URLs suggest an attempt to lure the user to external malicious content, likely for phishing or to download further malware. No scripts were extracted, but the PDF structure itself facilitated the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/strik?utm_term=algebra+1+regents+curve+june+2017 In PDF document text
    • https://wutiboduselojo.weebly.com/uploads/1/3/4/6/134665342/boguxowinunomos-rilodadaxef-rezepoziwadumut-wajatuje.pdfIn PDF document text
    • https://bajekilirevi.weebly.com/uploads/1/3/4/8/134868337/751d0cb87c5e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374188/normal_5f89e9ca0dcd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374519/normal_5fa846ae90ab2.pdfIn PDF document text
    • https://govonomuvilikiw.weebly.com/uploads/1/3/4/6/134620083/kemojijupowaxodi.pdfIn PDF document text
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/wewukuxelowegovugo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd0a7298-ab26-4e75-a748-9e8489266fbd/xonilifulebivatoja.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc06ef3116eb00e3c49974f/t/5fc115afa97599144e1dcb19/1606489520307/minecraft_1.8_9_texture_pack_default.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11e785b2-a849-4bd8-aae4-2c70bbc1671c/855280567.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1491d9698b02c7f233ff9/t/5fced45e10aae775715f90bc/1607390304925/11867102439.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc57d17d26ff1194f92edd5/t/5fc7bb7fefc65c5b7a4e15de/1606925183715/47638326178.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5BC 5636 bytes
SHA-256: ba20dd4ccd0ad9b553d4f91c93d040b6ba8202270516c1ab669e032440187d50
font_01_sfnt_off0000d915.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD915 11200 bytes
SHA-256: 701ce40e1559242f4a57cb48220345b36a70843228c92da03a502e745119b196

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