Malicious PDF — malware analysis report

Static analysis result for SHA-256 264c0232e213a685…

MALICIOUS

PDF

76.1 KB Created: 2021-03-14 08:20:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb33663d8f558df44f563f474cb94f51 SHA-1: e4ef928fd09963ce892925253477c753b2862bbe SHA-256: 264c0232e213a68505b771d0196ab42537fa79ee106dce650554b3a54d9eb213
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with a primary external URI pointing to 'xezojetit.ru', suggesting a phishing or malware distribution attempt. The document's content, though heavily obfuscated, appears to be a lure related to a 'British museum map guide', aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://xezojetit.ru/123?utm_term=british+museum+map+guide
    • https://static.s123-cdn-static.com/uploads/4451567/normal_5fdec9948409c.pdf
    • http://thelait.pro/jaloribiwivapumopusogvyxt.pdf
    • https://cdn-cms.f-static.net/uploads/4385850/normal_60108b10a5744.pdf
    • https://fobewesepujub.weebly.com/uploads/1/3/2/3/132303403/mafuvipofuguwenodika.pdf
    • https://putidano.weebly.com/uploads/1/3/4/3/134388569/9859987.pdf
    • http://topshops.website/weekly_math_homework_answers_6th_gradeseb6t.pdf
    • http://pizedajunar.22web.org/auto_navi_mit_google_maps.pdf
    • http://sexutepunoronuw.iblogger.org/duleriben.pdf
    • http://verefdliyvtorogo.xyz/kajogipurudevexaki6ad8y.pdf
    • https://cdn-cms.f-static.net/uploads/4428045/normal_601d7be8105dc.pdf
    • https://tizemafuniture.weebly.com/uploads/1/3/4/6/134636649/bevunomogemepunizojo.pdf
    • http://xtrading.buzz/42524624840aol7n.pdf
    • https://static.s123-cdn-static.com/uploads/4427793/normal_5fcee15a9f496.pdf
    • https://jexisaguratoka.weebly.com/uploads/1/3/1/4/131409442/pelomulurapudev.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/galinikagopit/41957044955.pdf
    • https://s3.amazonaws.com/likerajatob/converting_mm_to_cm_to_m_worksheets.pdf
    • https://s3.amazonaws.com/miwolezedubujoz/11525030804.pdf
    • http://ridurosumebo.epizy.com/energy_sources_and_the_environment_answer_key.pdf
    • http://jaruxuj.rf.gd/ad_script_template.pdf
    • https://s3.amazonaws.com/sowewazulejewi/hiram_na_salita_worksheets.pdf
    • 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_off0000e96f.bin
c05ddf3efbe707d88901c334c3415667b1e3900e21f2c0122cdfab68436a77c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE96F 5392 bytes
font_01_sfnt_off0000fb95.bin
7470d81c89d7ea14c831249ddc852fc6694de4176ed50b2470e945da7ff54917		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB95 11444 bytes

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