Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e82209d512492b5…

MALICIOUS

PDF

78.4 KB Created: 2021-03-21 07:31:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ff7fe02bd7c3cb0d5e6611b95e483363 SHA-1: 5086f1b196929b7920566db8efbc76593f82e36f SHA-256: 2e82209d512492b5cec1aec14fbaa837e38491610ae70c7ad6af7ff0ee62eb3a
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://soxebez.ru/123?utm_term=free+website+templates+for+graphic+design+portfolio PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473039/normal_602e46c4c7853.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447466/normal_6009f4c7eaeda.pdfIn PDF document text
    • http://dafesoxexigu.medianewsonline.com/tomirisewelubusotaledaron.pdfIn PDF document text
    • https://pagilosotutan.weebly.com/uploads/1/3/0/9/130970008/jarupakedu_xatexowuwido.pdfIn PDF document text
    • http://poposiruta.mywebcommunity.org/bohr_s_theory.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415929/normal_5fdf5f7c82a95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451940/normal_6042ec332863e.pdfIn PDF document text
    • https://juguxusomusivu.weebly.com/uploads/1/3/5/3/135327365/loposaw.pdfIn PDF document text
    • http://gejudoxe.mypressonline.com/mejor_app_de_finanzas_personales_iphone.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/just_like_us_ayo_and_teo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64218183-de44-44ae-a10e-0e15abedfa77/are_acer_laptops_any_good_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61d8f960-dea8-4d07-ada6-8492c7957ae3/sirawozefalagaxus.pdfIn PDF document text
    • http://pawuzax.onlinewebshop.net/terry_goodkind_warheart_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/lg_washer_dryer_combo_oe_error.pdfIn PDF document text
    • http://buzanuziti.myartsonline.com/wiwarovodojalitinovave.pdfIn PDF document text
    • https://d03ec42c-8b93-48d3-a61e-9aee396c0db4.filesusr.com/ugd/1e557c_fb4018fa7e7e48029dd0a307899be4de.pdf?index=trueIn PDF document text
    • https://979cd01f-16ea-4d2c-b189-234964c95597.filesusr.com/ugd/d4c4cf_52f94d8a330341c6864178dacc92b0e8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5886f650-6be7-4e91-93dd-a158378cf577/how_to_silence_kidde_smoke_detector.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e3028aa-00ee-4045-9c51-fdae5bf8792d/28910808760.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c6dc619-5f7c-49e0-a1c5-a94853575185/tugafupi.pdfIn PDF document text
    • https://ad843f61-c544-48d7-8cfb-3c048b9edb46.filesusr.com/ugd/0dd9ed_d75cf51bb67d4ea2921bf62630e6c229.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lawakux/all_website_video_er_online.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_off0000f5b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B2 5756 bytes
SHA-256: a9c49839ada1bdb98213a98cadfa0d5c05c14362a8bf3b1de00f2db036fd0bfc
font_01_sfnt_off00010928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10928 9976 bytes
SHA-256: ab5b4957fffc72906c1837ce8ccd149d7a6e7309d07c3c5080c3ec556bd84a10

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