Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea4f214e4e2735cb…

MALICIOUS

PDF

86.0 KB Created: 2021-03-20 18:49:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9dfb3ff09348c2f78564fbce1823cb23 SHA-1: bdd46f644c5aabe50bdac81e4e03f68f55844a8e SHA-256: ea4f214e4e2735cbd6842cae50f38fb33efa2bc7fff6939f6fead7ede8d58905
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/award?keyword=chakra+yoga+%25C3%25BCbungen+pdf PDF link annotation
    • http://luminar4-download.xyz/how_to_fix_printer_not_printing_black_ink_hp6xpup.pdfIn PDF document text
    • http://kmplitka.shop/honeywell_thermostat_manual_dt90eenwkp.pdfIn PDF document text
    • http://driveformclanemilwaukee.com/dinosaur_shooting_game_apkpureb5i59.pdfIn PDF document text
    • http://deromgroup.com/what_do_leaves_mean_spiritually3fpz5.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/ijcW520/xudegasinozopevepeluj.pdfIn PDF document text
    • https://cdn.sqhk.co/rojozedofaf/nm6hefT/kazebe.pdfIn PDF document text
    • http://funseeds.site/how_many_apple_airport_express_on_one_networkfyc5a.pdfIn PDF document text
    • http://ketadiets.site/gobubipugoridubunomelibijx2y.pdfIn PDF document text
    • https://cdn.sqhk.co/mifimafonuku/jjCggc9/sokoramovodizakopiferul.pdfIn PDF document text
    • http://bridgecommerce.com/ffxiv_titan_extreme_tank_guidej5wb6.pdfIn PDF document text
    • http://yeswins.space/platform_bed_wood_storagen31e1.pdfIn PDF document text
    • http://pihodze.com/bileke_fonksiyon_zelliklerilfl3r.pdfIn PDF document text
    • https://cdn.sqhk.co/bisuligiga/ggehgji/33237138426.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/60f45a94-dea7-4c2d-bc2a-3a4b885590b7/jamugaro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58235dff-d974-458c-92d8-cc238204a64f/garmin_zumo_660_charging_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f56c1691-5876-4aab-80ac-fa350851379f/59956810486.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf1d3bc9-196c-4372-86b0-f28b24f559ad/55429038467.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d8ca909-7070-4170-b267-c6187d5ef5fe/hp_officejet_4500_printer_wireless_setup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ac100e0-6150-4de5-9793-a99edeeee347/71221413234.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b64dbbf7-0b5c-49be-95a6-8977f24c0d6d/64339612095.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/602f8ca6-8eac-4728-9c75-1c6d4bb5ff3a/fufuvebavesozupekixe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c09ca03e-880f-439b-aba6-16c986c4b95a/cyberpunk_2077_reddit.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_off00010e77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E77 5424 bytes
SHA-256: 5bc30187bf30217e7b53a7d199c6ff5932bf9db6bac5541f7fcc9461d3b74964
font_01_sfnt_off000120b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120B4 12272 bytes
SHA-256: 46802e627fff9f3f8a6d226354a3c3aaff9c2db17ef0de0f6f175f0eee40a5c4

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