Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bbbebc0cae2ca41…

MALICIOUS

PDF

80.9 KB Created: 2021-03-04 12:51:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f41a04b06e52b68de416f9d7738a8870 SHA-1: 785d9523734f16d4d5d8d34291b2a60a1fa063c4 SHA-256: 7bbbebc0cae2ca41a25805f31f60824d462005ccf08c4bff6c7bc463af6d6ee4
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with a primary focus on a URL that appears to be a redirector or phishing lure. The document body, though heavily obfuscated, suggests a deceptive pretext related to content delivery. No scripts were extracted, but the presence of external URIs and link farm heuristics points towards a phishing or malware distribution campaign.

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://druttle.ru/strik?utm_term=my+little+prince+full+story PDF link annotation
    • https://cdn.sqhk.co/jelasusoved/Cmggjiz/satie_vexations_sheet.pdfIn PDF document text
    • https://cdn.sqhk.co/xetokive/jibiihf/best_launcher_for_smart_tv_box.pdfIn PDF document text
    • http://normaa-id.com/android_studio_adb_wifictmvb.pdfIn PDF document text
    • https://cdn.sqhk.co/bularalunop/gd7hhON/1672596957.pdfIn PDF document text
    • http://usesucre.pro/620169590197zntk.pdfIn PDF document text
    • http://lnstagramverifiedbadge-form.com/939429957846wmhs.pdfIn PDF document text
    • https://cdn.sqhk.co/kuniremolu/aijbra8/samejiloxon.pdfIn PDF document text
    • https://cdn.sqhk.co/lulamekajasu/L7ghhgD/46574750156.pdfIn PDF document text
    • http://xteenware.online/angular_templateurl_conditionalyl3s8.pdfIn PDF document text
    • http://strgb2.ru/excalibur_car_alarm_remotekio15.pdfIn PDF document text
    • http://trokot-newshop.online/free_calligraphy_templatesjghdb.pdfIn PDF document text
    • https://cdn.sqhk.co/toxinize/3p00jea/skin_editor_3d_for_minecraft_pe_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/suxugipajepo/hhhfFjj/ragumosof.pdfIn PDF document text
    • http://dabopoxele.getenjoyment.net/26624833572.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/cBLjjge/veluvumufinalabige.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://s3.amazonaws.com/jevelel/d_d_5e_gloom_stalker_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/18155718076.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/49274321675.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/sql_server_2019_rc.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_off0000f2d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D9 4788 bytes
SHA-256: e43b45ba98b949aaf59445147557dfa6e6f68ae97a82444bdd5beef5c15b0fc8
font_01_sfnt_off0001033f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1033F 10940 bytes
SHA-256: 63cf4ecaa801245a734a276a6cdd95f76fed6726e65bf20a21502df1349ef238
font_02_sfnt_off00012884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12884 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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