Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9b6d021a282b52f…

MALICIOUS

PDF

78.7 KB Created: 2021-04-03 01:03:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: f67f0701104704bacdca24132f310d08 SHA-1: cf5dd59e9d1a8bb201ee43e4b33f711023fe0833 SHA-256: f9b6d021a282b52ff6f5a5a95546bc98639d41be204d205a400a2fa348b2b920
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one specifically targeting 'adobe suite student price uk', suggesting a phishing or scam lure. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a link farm designed for deceptive purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://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
    • http://www.daltonmaag.com/In 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://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_off0000e3cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CF 4900 bytes
SHA-256: e04209c3d789bdd3d6b8736b5e39648313f8503df995899b346d6ece2ae35731
font_01_sfnt_off0000f480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF480 13208 bytes
SHA-256: cbc91e040da47e7e02c3125f5b252be9b69bfca870094507fbc05841c21e3889
font_02_sfnt_off00011f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F6F 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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