Malicious PDF — malware analysis report

Static analysis result for SHA-256 b151527216c6bbb7…

MALICIOUS

PDF

74.6 KB Created: 2021-03-17 20:44:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b557b6543f51c6662f053124a2790b67 SHA-1: a49ad8e60fd9c8e98ba33d3c0cc57b09370cb775 SHA-256: b151527216c6bbb72e2a14c5bcee718f849ceb0eb7eb28389ea28fbd3bb2407b
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to 'resalured.ru', suggesting a redirection or download attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is designed to host many links on disposable hosting, reinforcing the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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 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://resalured.ru/award?keyword=centrifugal+air+blower+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450244/normal_5ff2268832d69.pdfIn PDF document text
    • https://cdn.sqhk.co/vesagivara/Blm8ijy/wunoxukasezokexesitimel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406820/normal_6016e2b4aff6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462036/normal_5fcb76ea2264b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416802/normal_6029c533dcf4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404103/normal_604e47828ac7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388421/normal_6036ca8a74b4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388598/normal_603ce6076ac52.pdfIn PDF document text
    • https://cdn.sqhk.co/suwuwewazaka/e0jiaFZ/zapabizajojugenupolaguzu.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxowowi/CONghgj/bubble_poke_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/votojuxosaf/jujhIBz/party_city_near_me_nj.pdfIn PDF document text
    • https://cdn.sqhk.co/foxidagon/jdaghc4/are_new_basketball_cards_worth_anything.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jusarim.epizy.com/anime_vietsub_online.pdfIn PDF document text
    • http://sezajurul.epizy.com/free_contract_templates_for_independent_contractors.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62be3abd-7672-4764-a9f7-78e65e475b79/twilight_all_parts_hd_download_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f4463fb-5fc7-43fc-b3c6-61eb0cff2e46/warcraft_2_movie_download_in_hindi_720p_khatrimaza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5abf13f8-7374-4f35-adc4-4fa4561068f7/blues_for_mister_charlie_act_i.pdfIn PDF document text
    • http://xumomevafuvozup.rf.gd/wagevigefoled.pdfIn PDF document text
    • http://suxubijutun.rf.gd/kogidavaxekovakemavukor.pdfIn PDF document text
    • http://kibozitasosisan.epizy.com/84939272184.pdfIn PDF document text
    • http://vanifiwavubas.epizy.com/18905867108.pdfIn PDF document text
    • http://tixerewolulas.rf.gd/zatogagaderatufijagux.pdfIn PDF document text
    • http://rogofijanititad.epizy.com/stock_market_analysis_report_sample.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d36c99d0-f1de-4b98-9082-5506ed91c276/3.5_prestige_classes_rogue.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B8 5168 bytes
SHA-256: 4e8dae3c4a2f1d37ee8ee62465a1f0a5f98f0527a4efb9d4580f2219f44b13bb
font_01_sfnt_off0000f866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF866 10812 bytes
SHA-256: eaa2eefdfe89b37404b0f9baf4f96ffca70557d3c0371b2b3ad2a865bfca19d8

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