Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc0bac97c408b8b4…

MALICIOUS

PDF

88.4 KB Created: 2021-03-04 19:38:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 32d24889cd00d053f3f41c1ab9ab96bc SHA-1: a475b31343f2e662f53c317686923135b4e3a344 SHA-256: cc0bac97c408b8b41cd39e0c1d219ce87bb1e24f28a8d9bc78dd3618d0350efc
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a high ML score and ClamAV detection for phishing and trojan activity. It contains numerous embedded URLs that point to disposable domains and link farms, suggesting an attempt to redirect users to malicious content. The document body, though heavily obfuscated, appears to contain metadata related to search terms and application details, further supporting the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://vilenefex.ru/wix?keyword=law+and+order+svu+logan+paul PDF link annotation
    • https://cdn.sqhk.co/wesuwajil/yrgimjf/lobuxumenulabi.pdfIn PDF document text
    • https://cdn.sqhk.co/riteximeras/hcpdjaS/migedanegesegipo.pdfIn PDF document text
    • http://copyrightnotice-ig.com/rukexuwonelovikuserabepqgtk1.pdfIn PDF document text
    • https://cdn.sqhk.co/denepepunuja/j9RwEgc/cat_escape_room_houston.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420927/normal_6031b19842060.pdfIn PDF document text
    • http://1offpark.xyz/how_many_pages_in_draculak0ftz.pdfIn PDF document text
    • http://rolapisi.scienceontheweb.net/31888181216.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449774/normal_5fe78d8531416.pdfIn PDF document text
    • http://everydayy.fun/nigabulisinoxabejetamannljd.pdfIn PDF document text
    • http://ganitigusawev.mygamesonline.org/what_to_do_before_2d_echo_test.pdfIn PDF document text
    • http://contentmedialiteracy.com/sprint_short_codesw20tf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458621/normal_602931a0ae57a.pdfIn PDF document text
    • http://shoop-ft.ru/catalogo_de_cuentas_constructorajmype.pdfIn PDF document text
    • http://kojijeku.mygamesonline.org/burger_king_open_near_me.pdfIn PDF document text
    • http://sowipilarow.mygamesonline.org/cuanto_es_un_metro_sesenta_en_pies_y_pulgadas.pdfIn PDF document text
    • http://velesvoyage.ru/cuanto_cemento_lleva_un_metro_cubico_de_concretoetpay.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/7b916587-f663-497b-a866-273252bb942a/52825166965.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0aadc03-c011-4479-bb4d-8445c830b3f6/what_is_capitalism.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a2c991f-d217-4d5b-90b7-029fd4ceee8d/how_to_refill_brother_mfc-240c_ink_cartridges.pdfIn PDF document text
    • http://jozobudesurarab.onlinewebshop.net/hopper_with_sling_not_starting_up.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eacb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACB 4976 bytes
SHA-256: ae68909a4a02c04c6e1e4f1876161ae22843728581d324fbfedd77d00caff643
font_01_sfnt_off0000fbcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBCB 4236 bytes
SHA-256: 932ca54bb5d36db6606a066cb609d30d3a8b2774bb97a55573285a33aea503ce
font_02_sfnt_off0001072e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1072E 11304 bytes
SHA-256: 465667912f79bd07feba3cd04ac1c34b213711799d8280bec66c53a0e5167f0d
font_03_sfnt_off00012dd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DD0 16752 bytes
SHA-256: 702db90d42636ecfbb1414188bfcce8466f506840e16ce24213d65cd16988d67
font_04_sfnt_off000144e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144E6 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34