Malicious PDF — malware analysis report

Static analysis result for SHA-256 469a22f1ac626316…

MALICIOUS

PDF

84.9 KB Created: 2021-03-09 18:49:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 2dedaacec19f923ac98f60abb6daa97b SHA-1: 69d6da4437bcbaf4846ea6f8f59fd8eb8e134080 SHA-256: 469a22f1ac62631687ae6d8692a1ff85c411127f62973d47950e915a2541c4ee
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to a domain that appears to be a link farm designed to redirect users, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a context related to product pricing, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://maypoin.ru/strik?utm_term=asus+x205t+battery+price PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387928/normal_5fda3db14db59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378618/normal_5ff0eefe63771.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392854/normal_603d4b5b31348.pdfIn PDF document text
    • http://titonigofitazi.iblogger.org/8949490483.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401711/normal_602df2a177967.pdfIn PDF document text
    • https://wasizizinawuj.weebly.com/uploads/1/3/6/0/136096362/b79c8db79e9cad7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407788/normal_5fd84c1276e2b.pdfIn PDF document text
    • https://dupagerenukuxat.weebly.com/uploads/1/3/4/7/134751723/ropebajox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuzipani.rf.gd/tibisulovemaxujomawavujez.pdfIn PDF document text
    • http://jaduwogozomikuj.epizy.com/78727471820.pdfIn PDF document text
    • http://womopemi.epizy.com/78374059123.pdfIn PDF document text
    • http://dawozisi.rf.gd/ados_module_2_sample_report.pdfIn PDF document text
    • https://ad9e3d1f-bb22-46ca-892e-b6aa3325a756.filesusr.com/ugd/837d34_f50c2d6a752a4cdb94a7f1edc389cbf0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/popisiburewixuj/urine_culture_report_positive_during_pregnancy.pdfIn PDF document text
    • http://sarozaxag.epizy.com/wibegefojaresoz.pdfIn PDF document text
    • http://tulutubuvidimo.epizy.com/carestream_vita_cr_system_software.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/ximenazaxejeben.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/savuzufowa.pdfIn PDF document text
    • http://vawekud.epizy.com/carbothane_134_hb_product_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/anchorfree_hotspot_shield_file.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/44604899913.pdfIn PDF document text
    • https://71a5d838-4e22-4830-8da1-7955ec3365f5.filesusr.com/ugd/f2f43e_659cff79899841b8b866499c6469911b.pdf?index=trueIn 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_off00010c45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C45 5592 bytes
SHA-256: b859defcc5e9a038ca806f54136fac937d2ed32ddfc6adbea74c78984040171d
font_01_sfnt_off00011f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F63 11488 bytes
SHA-256: 734279cb3b2e698c740ce3ae5e5260b646bab9199af60ac165b282cfdbcff017

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