Malicious PDF — malware analysis report

Static analysis result for SHA-256 064d5697299ffaa3…

MALICIOUS

PDF

82.9 KB Created: 2021-09-09 00:06:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: c589f8007203a131c73794f6e9232de7 SHA-1: 0e72c5395688a64876c9662712edf118d8a13838 SHA-256: 064d5697299ffaa3c54210af5499e7973c9bb52cd5c26126a5b39ef35931f53f
134 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous external URIs, many hosted on disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript likely facilitates the redirection to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://allytemp.ru/uplcv?utm_term=live+motion+wallpaper+for+android+free+download PDF link annotation
    • http://siamsnail.com/media/userfiles/files/lujegiki.pdfIn PDF document text
    • http://orkoien.com/userfiles/files/33206959325.pdfIn PDF document text
    • http://hflchw.com/upload/file/wesanizugelagelojeso.pdfIn PDF document text
    • http://daiichilogistics.com/uploads/news_file/59676618195.pdfIn PDF document text
    • https://newchat.xyz/js/ckfinder/userfiles/files/89748879406.pdfIn PDF document text
    • https://notarbrazda.cz/userfiles/file/In PDF document text
    • http://soepcentrale-dekeyser.be/userfiles/file/koxedewibokexifuduzajezi.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/53f5139a9d7d289d502cb0c2ca88b6c5/jebepavikaluxaxejevopel.pdfIn PDF document text
    • https://acp-luxusingatlanok.hu/ckfinder/userfiles/files/zapixulukekowixufunokezef.pdfIn PDF document text
    • https://aftaplan.com/works/peepsparty/html/upload_files/file/41059368352.pdfIn PDF document text
    • http://drkoopman.nl/cmsimages/file/niteberinedag.pdfIn PDF document text
    • http://designklasse.de/ckfinder/userfiles/files/rakisegiworuwot.pdfIn PDF document text
    • http://startent.ru/SITE/files/editor/file/97020247158.pdfIn PDF document text
    • https://kop-trans.pl/uploads/userfiles/files/62889382616.pdfIn PDF document text
    • http://nova-auto.com/upload/89828596760.pdfIn PDF document text
    • https://jin-hung.com/userfiles/file/76688344570.pdfIn PDF document text
    • https://anbuadidravidarmatrimony.com/ckfinder/userfiles/files/jisaremevumuxer.pdfIn PDF document text
    • http://palakkadtourism.in/ckfinder/userfiles/files/4406434530.pdfIn PDF document text
    • https://aletihad-group.com/userfiles/files/fevuwurowetiwenufojeg.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/35ab0b8781bc93596d804f58398b87d7/gilupa.pdfIn PDF document text
    • http://verduciautodemolizioni.it/userfiles/file/75673995036.pdfIn PDF document text
    • http://www.binghan.my/userfiles/file/supatinux.pdfIn PDF document text
    • https://libertyrealestate.in/ckfinder/userfiles/files/24043634165.pdfIn PDF document text
    • http://sangtaoad.com/uploads/userfiles/file/74940980355.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/161338e9faec00---xidazovazezomitegigumibi.pdfIn PDF document text
    • https://xcheck.vn/uploads/userfiles/file/rimirorujikir.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://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_off0000de5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5C 10600 bytes
SHA-256: 98e0b0df476caaf205f5c103776830a7706caadcb660056e1b9cb27bafe083fb
font_01_sfnt_off0000f68d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68D 18348 bytes
SHA-256: b8384c3f30a5473dce5c7e8a336969511fbaaa6d2c0fbbf5eaf0811cd8b31aa2
font_02_sfnt_off000125ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125ED 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1