Malicious PDF — malware analysis report

Static analysis result for SHA-256 90e1b6757bb2afe6…

MALICIOUS

PDF

58.2 KB Created: 2021-03-01 08:41:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 7e09852fece721a56b2ba1851c800624 SHA-1: 6934365d70cbccffe0b2392c74e1b059798908eb SHA-256: 90e1b6757bb2afe6cc7e260201554f54807139d7f0e0eb9d28ddc24c214cd5db
124 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically pointing to a domain associated with phishing lures ('award?keyword=can+you+retake+the+wand+quiz+on+pottermore'). The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further indicates a malicious intent to use disposable hosting for link distribution. Although no scripts were extracted, the presence of numerous external links and the ML classifier's high confidence score suggest this PDF is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9637

Heuristics 4

  • 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
  • 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://xezojetit.ru/award?keyword=can+you+retake+the+wand+quiz+on+pottermore PDF link annotation
    • https://figalinob.weebly.com/uploads/1/3/1/8/131871825/jilopurube.pdfIn PDF document text
    • https://patewowuxafopon.weebly.com/uploads/1/3/4/5/134595548/85bfd374e3f1b80.pdfIn PDF document text
    • https://nepuvojikonutoz.weebly.com/uploads/1/3/4/6/134677469/3109020.pdfIn PDF document text
    • https://xuzatikanuji.weebly.com/uploads/1/3/0/7/130775198/puvapawowes.pdfIn PDF document text
    • http://navevukosuso.mypressonline.com/12251230048.pdfIn PDF document text
    • http://zodatowafe.getenjoyment.net/jatimukut.pdfIn PDF document text
    • http://joxopenizimili.iblogger.org/wifi_barcode_scanner_for_pc.pdfIn PDF document text
    • http://majedox.iblogger.org/befonisabeguloxam.pdfIn PDF document text
    • http://nasifulufajav.22web.org/redemption_process_strawman.pdfIn PDF document text
    • http://proita.space/mariage_de_figaro_acte_5_scene_3nmarg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/41151002908.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/73408607307.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/98535171878.pdfIn PDF document text
    • http://petojijoxura.onlinewebshop.net/spring_framework_guru_swagger.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/net_exam_result_2018_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/difference_between_noun_and_verb_worksheets.pdfIn PDF document text
    • http://jemekeluvakowop.rf.gd/lagu_azzara_band_alala_sayang.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C9 5328 bytes
SHA-256: ff9ebc69e575719813a079e57d09f1c8025ea7a47d29307a5949dbc2da5bb8fb

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