Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e36f4368a0b01f6…

MALICIOUS

PDF

81.9 KB Created: 2021-03-22 15:53:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 03fff7445f6ffe69d2d9868c8e0063d0 SHA-1: 009c35b517fe0a17f39b89f7c76991c41b53357d SHA-256: 2e36f4368a0b01f67ff7d0c3d628acc0164eb91be97e1460b25637414948a2a0
126 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of techniques used to redirect users to malicious sites, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://dugedepap.ru/award?keyword=ayyappa+bhajana+songs+lyrics+in+tamil+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365649/normal_604d2fed90437.pdfIn PDF document text
    • http://cenderaoriginator.com/nolopoxurubisilemhcg93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465394/normal_602adf97edc26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379856/normal_603fcbafc2a68.pdfIn PDF document text
    • http://sparzha.club/mupelufmqf8n.pdfIn PDF document text
    • http://findattime.com/xebefeledezetotupu6ryg.pdfIn PDF document text
    • http://istlan.fun/beautify_excel_sheeteyzwo.pdfIn PDF document text
    • http://infokurs.design/best_new_games_2019_androidf7qy3.pdfIn PDF document text
    • http://letnesil.xyz/panasonic_kx-tg7641_bluetooth5yft3.pdfIn PDF document text
    • http://businesslinecenter.com/gubenitugenujibamg4rw.pdfIn PDF document text
    • http://healthyforczechrepublic.site/best_british_short_stories_2020_reviewelju5.pdfIn PDF document text
    • http://ozalupa.space/american_psychological_association_apa_publication_manual4p7nj.pdfIn PDF document text
    • http://gladkoe-telo.xyz/lemerimizefixigivugitojysn4y.pdfIn PDF document text
    • http://kismykeitio.best/96760674194d8m7b.pdfIn PDF document text
    • http://noverst.xyz/simpleplanes_mods_downloadn1tfa.pdfIn PDF document text
    • http://universe1.space/tsat_blood_testgprf0.pdfIn PDF document text
    • http://exampl1214.com/4390055844os36.pdfIn PDF document text
    • http://chaptejvxz.fun/juganovewy5ln.pdfIn PDF document text
    • http://pixxel.life/2679083213ssudf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377388/normal_5ff0172fee540.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/visagogijulep/hcm_full_form_in_education.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/aune_x7s_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/luropiw/totukifiponujumavomav.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/tuzuvij.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B5 5544 bytes
SHA-256: fc38fe4c9f704cf63e45c0f31ea72be878ded393cf80562d54f2806a0c04dadc
font_01_sfnt_off00010655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10655 11040 bytes
SHA-256: eb10e45a7b0f9811073799fca6c46c633cd2f065a75b212d3745d10a7e690ab2
font_02_sfnt_off00012bdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BDD 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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