Malicious PDF — malware analysis report

Static analysis result for SHA-256 df3d7279d07023b5…

MALICIOUS

PDF

82.8 KB Created: 2021-02-10 09:21:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 5b27fa910fe607c4d4c57c0ae1d40252 SHA-1: 97554063d25f1c4d24c32daf1695c5df72f47dc6 SHA-256: df3d7279d07023b55a9a2ba7d8232564c1f208ace586c25dde188997d6504f65
244 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links to various websites, many of which appear to be disposable hosting. The document body, though heavily obfuscated, contains text related to movie search terms, suggesting a lure to attract users to these malicious sites. The presence of a malicious redirector link and ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 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.
  • 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://yafferge.ru/wb?keyword=kshatriya%20ek%20yoddha%20full%20movie%20%20hd In PDF document text
    • https://geziduvugizi.weebly.com/uploads/1/3/4/8/134862990/wipiveretosibaw_mobasekej_fumezem_gotun.pdfIn PDF document text
    • http://kakigomumarob.22web.org/dinagi.pdfIn PDF document text
    • https://lakiliwurig.weebly.com/uploads/1/3/6/0/136089988/b85310fdecd.pdfIn PDF document text
    • https://padawevuwelidas.weebly.com/uploads/1/3/1/4/131438111/4514314.pdfIn PDF document text
    • https://pujuwofox.weebly.com/uploads/1/3/4/8/134882524/rivegomezaguni.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484990/normal_5fc860c77fb80.pdfIn PDF document text
    • https://dudasajaje.weebly.com/uploads/1/3/4/3/134362454/saganera-fidowexuli.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417669/normal_5fcd83f2b462c.pdfIn PDF document text
    • https://zanolidades.weebly.com/uploads/1/3/2/6/132695759/4541416.pdfIn PDF document text
    • https://mejotowud.weebly.com/uploads/1/3/0/9/130969644/9d7f4c.pdfIn PDF document text
    • https://miremewokar.weebly.com/uploads/1/3/0/7/130738658/bataxukedebejozokadu.pdfIn PDF document text
    • https://tigibivimibi.weebly.com/uploads/1/3/4/3/134344299/1237052.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387807/normal_5fe6c2c3cc7bf.pdfIn PDF document text
    • https://mekuzawejonoma.weebly.com/uploads/1/3/1/6/131606345/bovifop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479923/normal_5ff9f6873dac3.pdfIn PDF document text
    • http://bapaweki.22web.org/construction_budget_vs_actual_template.pdfIn PDF document text
    • http://vebofituzor.iblogger.org/64931622095.pdfIn PDF document text
    • https://gamubojuteno.weebly.com/uploads/1/3/5/2/135299935/7ab89c27f73d.pdfIn PDF document text
    • https://dowozazufexu.weebly.com/uploads/1/3/4/6/134606261/tezudegibamijo.pdfIn PDF document text
    • https://jewelilug.weebly.com/uploads/1/3/4/3/134331877/556662.pdfIn PDF document text
    • https://fezabukife.weebly.com/uploads/1/3/5/3/135345753/f9d3e593d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1B 5340 bytes
SHA-256: 51a5ba41beaedee26058a014aff15712f8d34e3e8514d9336595ef3f5045a5df
font_01_sfnt_off0000ff2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF2A 10472 bytes
SHA-256: da36ff0f109e66a3b8da813b104a74c088b005479b5886dea9da374f17a2ad3f
font_02_sfnt_off00012367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12367 17356 bytes
SHA-256: 0b7822bcc076a27aebb4b8367d40980c2c7edbd4b439738c71bf5093d00bca32

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