Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1e47f9586a58a1…

MALICIOUS

PDF

75.5 KB Created: 2020-12-02 08:09:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 9071ab28ad48c1e618fa04b25dbcf831 SHA-1: 1cbd7521fcebd6267f66837c3f4da58897f7aaee SHA-256: ea1e47f9586a58a161e18ee1ed3be4b641868b106317f332970c7ba3a8a2ea53
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external links, with a significant number pointing to potentially malicious or SEO-farmed content, such as the URL 'https://trafficel.ru/123?utm_term=tok+ppf+example'. The presence of embedded links and the heuristic 'PDF_SEO_LINK_FARM' suggest the document's purpose is to redirect users to external sites, likely for phishing or to serve as a landing page for further exploitation.

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
  • 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.
  • 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://trafficel.ru/123?utm_term=tok+ppf+example PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409630/normal_5fb04245d7725.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478928/normal_5faa0b60af8cc.pdfIn PDF document text
    • https://zogeliwev.weebly.com/uploads/1/3/4/3/134353139/dd485718.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377642/normal_5f99cf9e4cfe9.pdfIn PDF document text
    • https://meramoginatazo.weebly.com/uploads/1/3/4/7/134733336/86bd0b77986.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412757/normal_5fba31bb587f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482415/normal_5fbc70a225b1e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc002e7e5c7695ca996b6a8/t/5fc48c9e61e25426e1c97b1c/1606716575030/les_paul_custom_pro_guitar.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1318a5bcb0228a2845bc9/t/5fc69237e18c5c478ee070e1/1606849080019/carson_city_los_angeles_zip_code.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/33751563411.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/business_ethics_case_study_examples.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdedfdeaf37e3b6460991c/1606282749821/saeco_aroma_espresso_machine_review.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/asphalt_nitro_mod_apk_apk_mirror.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/coleman_mach_air_conditioner_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc016b9c30a162e0c4e17a3/t/5fc11a605147b148045afc09/1606490722290/coc_magic_s1_apk_download_2019.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9A 4852 bytes
SHA-256: d30a4dec04d6c99c008572f138a8f43c21135a5a07634a3cee4cf58d0a275d74
font_01_sfnt_off0000ef0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0F 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off0000fa72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA72 11372 bytes
SHA-256: 9f42c26492caaec4641f13e96fe764724b417bb79393761b0988ec11eb24b10d

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