Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c05fd47996c1655…

MALICIOUS

PDF

74.7 KB Created: 2021-05-09 12:41:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e35da53ffc978d167d5e245f7b0c4730 SHA-1: 58bd7f247a785a2413bbccd8e51aa189dfb934c5 SHA-256: 9c05fd47996c1655ec0c2fe7ffdf0c852b8911d7caf86c9f025c927830478dbd
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 0.9956

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://maypoin.ru/strik?utm_term=louise+hay+21+day+mirror+work+pdf PDF link annotation
    • https://cdn.sqhk.co/musutalivun/AiaUAgi/horse_racing_manager_mod_apk_download.pdfIn PDF document text
    • http://igafnd.org/94966988048zivzu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416149/normal_604653b5e5a68.pdfIn PDF document text
    • https://cdn.sqhk.co/gukituzaju/hiy185U/vujufelerusi.pdfIn PDF document text
    • http://dorightschool.com/calculator_apps_download_iosg9wlq.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/icFBFii/sejupofinefipigo.pdfIn PDF document text
    • http://rte-ita.fun/manual_normas_apa_sexta_edicinrp814.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379370/normal_604b657a485a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495043/normal_601a29a77b234.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444110/normal_60501641c936a.pdfIn PDF document text
    • https://cdn.sqhk.co/sakiforivona/Lfpgg84/black_panther_actor_cancer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485173/normal_6042fc128883c.pdfIn PDF document text
    • http://cleaner360.shop/misovogukudarologireboj5mq5g.pdfIn PDF document text
    • http://detonic-official.website/zuposenoruzaafmry.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/78c60948-4b52-4dac-afa1-09b3b549f7fb/gewizoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6004785d-9d4d-4aaf-b95e-cbb283626e1d/how_to_find_the_height_of_an_object_by_its_shadow.pdfIn PDF document text
    • http://pesogulovuxolub.rf.gd/tujunaf.pdfIn PDF document text
    • http://zuzimekot.rf.gd/jajowupiwigudaximivukol.pdfIn PDF document text
    • http://wuvipaxafosi.rf.gd/vezexitogezo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa54587b-4e14-43f3-b5fc-c2d2d468537c/12997944242.pdfIn PDF document text
    • http://kisezemewarajox.rf.gd/autobusni_kolodvor_zagreb_informacije_telefon.pdfIn PDF document text
    • http://pulawev.epizy.com/87099495618.pdfIn PDF document text
    • http://dowirimidezifa.rf.gd/convert_html_to_using_nodejs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d761165-bc1f-431c-a9cc-d6ae07c4d8fc/lola_and_the_boy_next_door_full_book_online_free.pdfIn PDF document text
    • http://pagovogezafub.rf.gd/demographic_information_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a4ecef2-6bb2-400b-822b-6f16f9cc3df8/biblical_definition_of_adversary.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_off0000e511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE511 5632 bytes
SHA-256: dea9312aa18aa3b5925e73f3ef9d0be985a001d42b70f8fc693a680c5e30e581
font_01_sfnt_off0000f831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF831 10892 bytes
SHA-256: 0f1e0c31ff92239e1b21dc4c183f0d9a8f94fca05c430e360ff20ff81734dd43

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