Malicious PDF — malware analysis report

Static analysis result for SHA-256 447d30d6dc8f9bfe…

MALICIOUS

PDF

69.7 KB Created: 2021-01-28 18:11:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7cd10dd2024dc2952f29e85973ba7c86 SHA-1: 974c89ebc4e0e403ea525310e106ffa1a5ed353f SHA-256: 447d30d6dc8f9bfea44f9bb1f14c66bda14633fb6b7ea6bd231cbf68befcca32
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to 'Sonic mod minecraft', suggesting a lure to attract users interested in gaming content. The presence of multiple disposable domains and link farms further indicates malicious intent, likely for phishing or distributing further malware.

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
  • 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 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://traffine.ru/wb?keyword=sonic%20mod%20minecraft In PDF document text
    • http://roduvogixaxo.66ghz.com/rajapugadutofaki.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/2817671.pdfIn PDF document text
    • https://sazaburesifug.weebly.com/uploads/1/3/4/2/134265765/popufubigasut-wejimosev.pdfIn PDF document text
    • http://fepafotejidug.iblogger.org/regafusejekutu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415300/normal_5feb2206f1b47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401712/normal_5fea40705ce89.pdfIn PDF document text
    • https://bafexobis.weebly.com/uploads/1/3/4/0/134041027/fepuj_gupije.pdfIn PDF document text
    • https://sowovejapa.weebly.com/uploads/1/3/4/7/134709895/5744206.pdfIn PDF document text
    • https://xezafeliwi.weebly.com/uploads/1/3/1/3/131381443/tafiwisegizezor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gobudulofi.rf.gd/49108469905.pdfIn PDF document text
    • http://nokolul.epizy.com/bol_beliya_hd_video_song.pdfIn PDF document text
    • http://lanotiwigizoxep.epizy.com/new_2018_lipid_guidelines.pdfIn PDF document text
    • http://tasefabomodewiv.epizy.com/gosedojitekalobekekimis.pdfIn PDF document text
    • http://rubuvajaroxe.epizy.com/avital_ronell_books.pdfIn PDF document text
    • http://pimoked.rf.gd/81374963509.pdfIn PDF document text
    • http://mujunuge.rf.gd/new_bollywood_movies_hd_2018_free.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://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_off0000c012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC012 5060 bytes
SHA-256: a792110c06b9e004e838553d3b27287d6e81907fc9c5a644efe13853e8191c75
font_01_sfnt_off0000d132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD132 10524 bytes
SHA-256: 706bd7e492f231a4f470a360152c85715551651d7ca13397365b3e22351f5b72
font_02_sfnt_off0000f57b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF57B 16064 bytes
SHA-256: eb8de34d49bdb7e064d1958b3ba1589f735f6484cb4cf951e795d7567082a542

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