Malicious PDF — malware analysis report

Static analysis result for SHA-256 030b2688614ca2fa…

MALICIOUS

PDF

121.9 KB Created: 2021-03-30 22:16:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 04a5d12b0a9d1ab8be00995f7744adac SHA-1: 7dc6245e7fc3c1611a2e94aae3ae553d9b62edbb SHA-256: 030b2688614ca2fa339fb9accddbdf9250fe2ba24cd66904a5c68a3697ad8154
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, indicating a link farm designed to redirect users. The presence of a 'utm_term' parameter suggests tracking for phishing or malicious campaigns. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/strik?utm_term=vitamix+a3500+bundle PDF link annotation
    • https://cdn.sqhk.co/kulobuwaxegu/89jihgm/reraz.pdfIn PDF document text
    • https://cdn.sqhk.co/vakusukereju/iQnTl3s/suxekupuwasesaka.pdfIn PDF document text
    • https://cdn.sqhk.co/dijowasedop/ZJPiaZW/64036565593.pdfIn PDF document text
    • https://cdn.sqhk.co/remezebona/ihshcNV/king_of_fighters_98_move_list_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/kimazibo/ja8Ohcv/15477246924.pdfIn PDF document text
    • https://cdn.sqhk.co/doporaba/ibhj9Gc/jump_rope_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/febowozefu/ggdjcij/video_viewer_vlc_download.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/VjcihMD/percentage_uncertainty_calculator_chemistry.pdfIn PDF document text
    • http://mamuxorap.getenjoyment.net/motesomefel.pdfIn PDF document text
    • http://sopugepibimel.mypressonline.com/demoregewaguxerudezal.pdfIn PDF document text
    • https://cdn.sqhk.co/samidabaxik/nVjg9x6/free_survival_battleground_fire_battle_royale_gameplay.pdfIn PDF document text
    • https://cdn.sqhk.co/ropimipaf/gjFhghg/hernias_inguinales_2017.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/Bjiibho/bevuses.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://9170d309-caca-4186-8987-bf6b40ce219c.filesusr.com/ugd/baef12_76aea6ad961d4d4e870457a0e9d1427f.pdf?index=trueIn PDF document text
    • https://937a8a2d-b41a-4163-aff8-eda6db263557.filesusr.com/ugd/21e6f2_d6f38f9e9c46485abe37b648029bb7a7.pdf?index=trueIn PDF document text
    • https://dec4a425-646e-450a-80ca-a73a75d058ad.filesusr.com/ugd/ba3095_87722330c58b427b906ba83dc7f35b86.pdf?index=trueIn PDF document text
    • https://e1318bff-d970-45e2-bcea-45481503a18b.filesusr.com/ugd/75a96d_5c7d4b51fefd4218989c436cc495a6e8.pdf?index=trueIn PDF document text
    • https://a6132035-7465-4fe4-be4e-2faa96c22dab.filesusr.com/ugd/cf950b_8f8ce69028484db298767b5f8ebfa498.pdf?index=trueIn PDF document text
    • https://2e81f42f-67f9-46a9-89e2-a5f3ab3b03ee.filesusr.com/ugd/f138f5_40ec32dc39894a20b46ded7315d1b15c.pdf?index=trueIn PDF document text
    • https://571cbd0a-ba82-408d-be6d-2df53a8fcfe5.filesusr.com/ugd/02af14_24849c29a33243f4b9b8e9f5b56e9b8d.pdf?index=trueIn PDF document text
    • http://bodegifu.atwebpages.com/long_oil_alkyd_resin.pdfIn PDF document text
    • https://e8dc5420-792a-4861-90db-09cfc8d8a7d1.filesusr.com/ugd/1378f5_c541fb545b234be7bb9ee253b254df23.pdf?index=trueIn PDF document text
    • https://5fdaa9e0-ad6d-443b-8779-beb8e45026dc.filesusr.com/ugd/05301a_f1e335724c3549dabee47f51ac5a5645.pdf?index=trueIn 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_off0001663b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1663B 5072 bytes
SHA-256: 6c0b5580b0f4430019797805f5d5bb7e287760c015d26b2ab30969d2f4aa3ace
font_01_sfnt_off00017755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17755 6868 bytes
SHA-256: 331ecdde03775791bb5d1119ab51d7abf624872971f1d8fadd18d6e072d6bf77
font_02_sfnt_off00018adb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18ADB 11752 bytes
SHA-256: 1d387a33859627c862fe5f26fcde53388782db58736e539e6797008e755cd089
font_03_sfnt_off0001b2ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B2FF 16436 bytes
SHA-256: 1a82f0eb0432454a61ce5f8d432852ec405de7420645a83d259848c269168e1a
font_04_sfnt_off0001c905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C905 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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