Malicious PDF — malware analysis report

Static analysis result for SHA-256 d527a13ef13e9984…

MALICIOUS

PDF

72.2 KB Created: 2021-02-26 09:58:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1a3dd36f35b628dcd03d3bf95dd24cd2 SHA-1: e6393acf3de518912d3071bcf466d1457afd00d2 SHA-256: d527a13ef13e9984626ef6a6e48d55fd7bfebb7d8eaa65e9653c956022848d8e
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of external URIs and a link farm heuristic points towards a phishing or redirection attack, likely aiming to deliver a second-stage payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9668

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://bologen.ru/award?keyword=how+to+turn+on+speaker+on+alcatel+phone PDF link annotation
    • http://vovpomnim.ru/guideline_hypertension_aha_20180pv9p.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416675/normal_5fc59daeef681.pdfIn PDF document text
    • http://lestyprin.online/bidaai_serial_song_freelx6r8.pdfIn PDF document text
    • http://wezotarekexu.22web.org/refivijitek.pdfIn PDF document text
    • http://robinmani.site/godus_weyworld_treasure_templeyfgwe.pdfIn PDF document text
    • https://loxutagunepolu.weebly.com/uploads/1/3/4/7/134763456/fumitikir.pdfIn PDF document text
    • https://pafabori.weebly.com/uploads/1/3/5/3/135317136/fcaf33.pdfIn PDF document text
    • http://instas.site/walillahil_asmaul_husna_artinya_brainly3x59s.pdfIn PDF document text
    • http://regvoolkim.website/popujejulajidap3exf.pdfIn PDF document text
    • https://xobojurum.weebly.com/uploads/1/3/4/5/134599739/lubosalosax.pdfIn PDF document text
    • http://kinemulawaw.sportsontheweb.net/how_many_cups_is_a_medium_sweet_potato.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://magivaxinel.rf.gd/57386639247.pdfIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/18411454991.pdfIn PDF document text
    • http://jabejanaboz.atwebpages.com/sharp_lc-60le650u_backlight.pdfIn PDF document text
    • http://wujawejibizub.epizy.com/all_in_one_toolbox_apk_pro_2018.pdfIn PDF document text
    • http://jidowadosul.epizy.com/b._ed_exam_form.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_off0000f689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF689 5136 bytes
SHA-256: aa540a7ba901a46f31f563cdc94e605e34327130cfca1a587b3f54240c3013c9

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