Malicious PDF — malware analysis report

Static analysis result for SHA-256 f29236e22cd60900…

MALICIOUS

PDF

65.4 KB Created: 2021-01-20 09:54:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 54528f823e66524bc62228d429b643fb SHA-1: d307376e724535b8ee76403d6f14ea00dc747e43 SHA-256: f29236e22cd60900f99077f15d829d2df3ca0dcbe224cc7a5b880915b80a0410
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, containing numerous external URIs and functioning as a link farm on disposable hosting. The embedded URLs suggest an attempt to redirect users to potentially malicious sites, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://trafficel.ru/123?utm_term=texas+go+math+grade+7+pdf PDF link annotation
    • https://site-1174404.mozfiles.com/files/1174404/geometry_dash_subzero_hack_apk_android_1.pdfIn PDF document text
    • https://site-1168081.mozfiles.com/files/1168081/9660557664.pdfIn PDF document text
    • https://julogunakununu.weebly.com/uploads/1/3/2/8/132814048/wikugasivagesas.pdfIn PDF document text
    • https://site-1175190.mozfiles.com/files/1175190/cat_popping_sound_meme.pdfIn PDF document text
    • https://sedawuxel.weebly.com/uploads/1/3/5/3/135326539/silijoduvejos-zadonapikenu.pdfIn PDF document text
    • http://bepebeku.22web.org/malayalam_love_sad_album_songs.pdfIn PDF document text
    • http://sekegixederixit.iblogger.org/servisne_informacije_brcko.pdfIn PDF document text
    • https://romuxejis.weebly.com/uploads/1/3/4/8/134887308/3c46374ccd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://bakenexiradofo.epizy.com/everton_injury_report.pdfIn PDF document text
    • http://tufuripisaren.epizy.com/22585567258.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/45342003938.pdfIn PDF document text
    • http://mevonaku.rf.gd/37061314212.pdfIn PDF document text
    • http://pitefabe.epizy.com/azores_travel_guide_book.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/dibadanufiginovo.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB725 5152 bytes
SHA-256: a6296a3fa53f07d66e60f3f941c1e2df489501db8cf4ccae494301903ad83120
font_01_sfnt_off0000c8be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8BE 10012 bytes
SHA-256: a2fa2405e8f329d51e638663410beeea82c40364420489ecbe1930b37632ed59
font_02_sfnt_off0000eac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC2 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

Open this report in the interactive analyzer, or submit your own file for analysis.