Malicious PDF — malware analysis report

Static analysis result for SHA-256 196f9962e6be8384…

MALICIOUS

PDF

162.7 KB Created: 2021-02-27 17:09:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 69e1001f0bdc69f7e86d1fbd4f48bbae SHA-1: e0a9bead34bffca42b933e1bc585bd40d1859080 SHA-256: 196f9962e6be83842b371eded1041c99f294082821e9ba4e384f38979e0e9f1a
184 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, specifically flagged as a phishing trojan. It contains a large number of embedded URLs, many pointing to disposable domains and redirector infrastructure, designed to lead users to malicious content. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://dafemum.ru/wix?keyword=crime+patrol+26th+november+2015+paris+attacks In PDF document text
    • http://idealicaufficiale.website/11899784987gj5dj.pdfIn PDF document text
    • http://kezerojipogut.iblogger.org/mebutosomu.pdfIn PDF document text
    • http://1xbet-regi.site/vesuxesesunuraxapawozites5lbl.pdfIn PDF document text
    • https://gopufijubasid.weebly.com/uploads/1/3/1/8/131856987/misuk-sagisorupixad.pdfIn PDF document text
    • https://wakepazatojux.weebly.com/uploads/1/3/0/8/130873951/zenora.pdfIn PDF document text
    • http://autokenn.com/17960912564spron.pdfIn PDF document text
    • http://file-id.ru/riretuxogdcw1z.pdfIn PDF document text
    • https://bogigusojuvifu.weebly.com/uploads/1/3/4/3/134316749/dexikobatanatota.pdfIn PDF document text
    • http://workbykoder.xyz/pomiguriropanisumovijamorqckrl.pdfIn PDF document text
    • http://fotonagosuslugi-01.space/suwuwus8p8o.pdfIn PDF document text
    • http://1cats.space/pogusubefuvevlkm4s.pdfIn PDF document text
    • https://peniwifagupe.weebly.com/uploads/1/3/0/7/130738894/jifiduloderofixu.pdfIn PDF document text
    • https://nunipotewisi.weebly.com/uploads/1/3/4/8/134892443/5aabe32f.pdfIn PDF document text
    • http://becloud.website/arturia_microbrute_se_analog_synthesizer45fw8.pdfIn PDF document text
    • https://kupelaranix.weebly.com/uploads/1/3/4/7/134729830/bemitoseferip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tojegazanet.rf.gd/44329092347.pdfIn PDF document text
    • http://folujas.epizy.com/manualidades_navideas_en_foami_escarchado.pdfIn PDF document text
    • http://buruwebiza.rf.gd/84520302699.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/pengertian_report_text_bahasa_inggris.pdfIn PDF document text
    • http://reroxiki.epizy.com/polytune_2_vs_3_mini.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_off000240d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x240D7 5944 bytes
SHA-256: 9331ce3e5d7b3d157134cd2b01411a75782e85702027a75347b27f4cb8467f82
font_01_sfnt_off000254ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x254EF 11480 bytes
SHA-256: 69f7bd74de063c7e0f6ec430d05ee244abf631a00f4672ff6d24e8f91c631601

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