Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f537075d693976e…

MALICIOUS

PDF

63.7 KB Created: 2021-03-11 04:07:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 4e8977ff5c2d4ea2a61951afe2710dc9 SHA-1: 215b4e5ec9a40631ab8175d495352bf54adcddee SHA-256: 7f537075d693976e8d551ef92c8353ac2ec6991f37a848563142bb049d04b320
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external links, many pointing to disposable hosting and employing UTM parameters, indicative of a link farm or phishing campaign. ClamAV and ML classifiers also flagged the file as malicious, specifically as a phishing trojan. While no scripts were extracted, the structure and external links suggest the document is designed to redirect users to malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6416

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://golowaki.ru/award?keyword=bsc+nursing+syllabus+ruhs+pdf PDF link annotation
    • https://mixenabunagoxo.weebly.com/uploads/1/3/5/3/135320093/502216.pdfIn PDF document text
    • http://hidver.com/ielts_reading_tips_booku2anq.pdfIn PDF document text
    • http://genoray.pro/micro_expressions_book_malayalamla9ww.pdfIn PDF document text
    • https://dutizadip.weebly.com/uploads/1/3/4/8/134889078/bebaji.pdfIn PDF document text
    • https://woduluzotuni.weebly.com/uploads/1/3/4/3/134373450/zebimase_jiruxexano_waliwivorodidid.pdfIn PDF document text
    • http://laitlabs.pro/winkler_titration_methodp1923.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90616711-e42f-44d8-91ef-3ed034f4300e/45719599368.pdfIn PDF document text
    • https://e25b5f36-ee09-4010-8803-019b2853a23b.filesusr.com/ugd/c34eac_fa6c63a392004230be92018eb5b58f95.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/setikizo/49060945903.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/astro_android_tv_apk.pdfIn PDF document text
    • https://9a4203bb-6ff2-4ef1-9c63-3f113f84a884.filesusr.com/ugd/ea9bdf_4e915fa6d18244cb840f9e09b34a15b3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/88f55bcf-2abd-4f8b-8852-3beb3c965e31/21934243372.pdfIn PDF document text
    • https://1c514d3f-4aca-4c14-a2cc-94ef866bc6c7.filesusr.com/ugd/860217_2cf2f42e07dd4abca5634c7f1dc5c291.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a820201-e590-46db-a166-93e85264518f/descargar_evangelio_de_tomas.pdfIn PDF document text
    • https://d5fb4b5d-766d-4e54-ab1c-ecc61d2b7d82.filesusr.com/ugd/b0c8dc_f1b51677058a47f7947a1e3da51ebe1c.pdf?index=trueIn PDF document text
    • https://82656f1f-dd0f-4426-89ca-c5688288f975.filesusr.com/ugd/56de54_0c706ef5556a4d0791ac2394b952ddd7.pdf?index=trueIn PDF document text
    • https://b1b0174c-961c-4936-87f6-765e1132391e.filesusr.com/ugd/6cf804_a7ef73837ec54a8e86886fa01e0e67c8.pdf?index=trueIn PDF document text
    • https://d451e762-8e00-4155-9971-9512d28d2528.filesusr.com/ugd/b52961_b45969bb22b04b269e3ada7d1728d8c3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0469b23-ca37-497f-8b2e-a62243ad2b8b/icd_10_code_for_acute_infection_unspecified.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/iquitos_amazon_tour_guide.pdfIn PDF document text

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