Malicious PDF — malware analysis report

Static analysis result for SHA-256 123b893ed7b20989…

MALICIOUS

PDF

69.4 KB Created: 2021-04-03 01:03:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 2e16b88ae7d2389b0e18424776d24dba SHA-1: 0738da8ab70dda0f65babda1f45b86fd83fb03ba SHA-256: 123b893ed7b2098961d312c9c473a220c73b88611e812736f451535cf6792e54
124 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs and is flagged as a link farm, indicating a phishing or malicious redirection attempt. The ClamAV detection and ML classifier further support its malicious nature. The document body, though heavily obfuscated, contains references to 'Adobe suite student price uk', suggesting a lure to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8464

Heuristics 4

  • 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 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://xajibur.ru/strik?utm_term=adobe+suite+student+price+uk PDF link annotation
    • https://cdn.sqhk.co/wadupaxi/cWgh9IQ/31814085484.pdfIn PDF document text
    • https://cdn.sqhk.co/fezusife/TXvgfjg/bojudexetofu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486742/normal_5fccda7c6c675.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/W3ibCjU/acurite_5_in_1_weather_station_amazon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379030/normal_602e1e6e76e30.pdfIn PDF document text
    • https://cdn.sqhk.co/riwifesineji/DxjbheJ/xitowinob.pdfIn PDF document text
    • https://cdn.sqhk.co/moserusoba/pmihici/35870766219.pdfIn PDF document text
    • https://cdn.sqhk.co/fusunejevawu/fgfieWY/70092777886.pdfIn PDF document text
    • https://cdn.sqhk.co/nizivatitogu/BGjemhj/outbreak_meaning_in_french.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1aa8252-5dde-4fc9-9697-28f8ca5a288d/sword_art_online_alicization_light_novel_volume_19_vietsub.pdfIn PDF document text
    • http://rereroma.epizy.com/jepilikutixisoxibuba.pdfIn PDF document text
    • http://bukumetaboxalo.epizy.com/19066136868.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/what_does_corporate_culture_mean_to_you.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da81f59a-2412-4386-b7dc-c2410556e18d/what_does_social_safety_net_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/in_google_earth_entfernung_messen.pdfIn PDF document text
    • http://begosene.epizy.com/you_re_in_my_heart_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/sejakopa/39355590204.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49e3db92-1aaa-4334-b639-60576b7e4a75/38867388721.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da17335c-12ed-42d0-92ec-8f89541eb420/ladekoxigufaxojofad.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_off0000e3cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CF 4900 bytes
SHA-256: e04209c3d789bdd3d6b8736b5e39648313f8503df995899b346d6ece2ae35731