Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc785f4a7cff0655…

MALICIOUS

PDF

74.9 KB Created: 2021-03-22 10:59:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 47e2988f0aeec3f099a5b180f8be6fa0 SHA-1: 2c572ec7811e59c0899992fc12ee4d95b9d9a88b SHA-256: fc785f4a7cff0655af024b39bf6945925693cc22027812a670bde4e46ed491f5
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and one specifically mentions 'how much money does an amazon author make' in its UTM parameters. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the extensive use of external links suggests a lure to a malicious website.

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://jumiwimov.ru/aws?utm_term=how+much+money+does+an+amazon+author+make PDF link annotation
    • http://lalikexitaxixix.getenjoyment.net/sexatopupodedepinoteloju.pdfIn PDF document text
    • https://cdn.sqhk.co/jesupasuzoku/uIpAXgj/67611443547.pdfIn PDF document text
    • http://rexuwoxaga.sportsontheweb.net/top_250_movies_imdb_list.pdfIn PDF document text
    • http://lomuwugevona.getenjoyment.net/genesis_1_26-28_esv.pdfIn PDF document text
    • https://cdn.sqhk.co/dorejewibiz/gehcigh/62031267310.pdfIn PDF document text
    • https://cdn.sqhk.co/kibukumivu/jbiggjd/picture_of_bumblebee_transformer_car.pdfIn PDF document text
    • http://pilinopumewaza.mywebcommunity.org/example_of_a_work_plan.pdfIn PDF document text
    • http://gubinuwub.iblogger.org/febeloxijuximu.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://pitupeg.epizy.com/kokuvoguv.pdfIn PDF document text
    • https://720c7b34-a033-4bf0-83ea-6be17de98aa2.filesusr.com/ugd/03ef8e_f5d9a2ed46c14b3480b7f8be4611edee.pdf?index=trueIn PDF document text
    • http://riporem.epizy.com/22241719372.pdfIn PDF document text
    • http://xurolawewetaw.epizy.com/app_blablacar_android.pdfIn PDF document text
    • http://zukomakiduw.myartsonline.com/52292378903.pdfIn PDF document text
    • http://xeketak.epizy.com/7765687651.pdfIn PDF document text
    • http://paritoxo.rf.gd/beats_audio_equalizer.pdfIn PDF document text
    • http://rewifavad.epizy.com/crystal_reports_viewer_old_version.pdfIn PDF document text
    • https://113c517c-d7b0-4b36-99d7-6722bcb7ef36.filesusr.com/ugd/8e66a5_bb015a5c81d542f492fb5e1db7ef11df.pdf?index=trueIn 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_off0000d863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD863 5248 bytes
SHA-256: a57322fb04bce78aa95c6faf6fe3c6a35422ad32e7460ca1431d2963ab1c1bfb
font_01_sfnt_off0000ea28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA28 11632 bytes
SHA-256: f0b861bcefa5720839b5dc30fc3b6800244d6d189f1538932a5844b778226d36
font_02_sfnt_off00011030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11030 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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