Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcac7a5def9bf5b1…

MALICIOUS

PDF

76.3 KB Created: 2021-03-15 00:50:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0982dc4258b2dd7c15cbc573b47364c8 SHA-1: 989bf9fa8666bf983cc320da24cdbd2c0b467121 SHA-256: fcac7a5def9bf5b18ad6a4c5275222438b0f5fb47aba53bd0a67ec281139f296
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 0.9991

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://druttle.ru/123?utm_term=la+jolla+cove+guided+snorkeling PDF link annotation
    • http://24goodstore.site/euro_truck_simulator_for_playstation_23xr4t.pdfIn PDF document text
    • http://raxewaponoxiv.mygamesonline.org/18341334322.pdfIn PDF document text
    • http://cashbackmoney.info/petsafe_stay_and_play_wireless_fence_manualua9p4.pdfIn PDF document text
    • http://gakawisogafuga.mygamesonline.org/vimukutuwitizenevep.pdfIn PDF document text
    • http://nuloriwilorij.scienceontheweb.net/felofapopesipowilub.pdfIn PDF document text
    • http://file-id.ru/7567941707385ri7.pdfIn PDF document text
    • http://movizopolu.medianewsonline.com/amadeus_altea_reservation_desktop.pdfIn PDF document text
    • http://daddytestit.xyz/latex_beamer_classc0tge.pdfIn PDF document text
    • http://retys.fun/assurity_mri_pacemaker_manualaeiju.pdfIn PDF document text
    • http://1-bog.ru/lasofustbpu.pdfIn PDF document text
    • http://drilltech.info/sivatubisiwilen9n07e.pdfIn PDF document text
    • http://igafnd.org/toto_toilet_st743s_partstypwd.pdfIn PDF document text
    • http://trynutra.shop/69089731797pxcoz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9d50af6f-dbf7-41ba-b854-83985329a12b.filesusr.com/ugd/33c377_084af28657be427c8c301df65a45cafe.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/103c15f6-3bcb-47d9-a1e5-410c9c16ea2e/50478472450.pdfIn PDF document text
    • https://6bb2b61b-82bf-473b-8365-63ddb02ddbdd.filesusr.com/ugd/d55797_2613ed28a9b1482eb3edd273fc7f2903.pdf?index=trueIn PDF document text
    • https://a6132035-7465-4fe4-be4e-2faa96c22dab.filesusr.com/ugd/cf950b_dc9b0094a68c4132beb26098749b40e5.pdf?index=trueIn PDF document text
    • https://ebed6276-6372-4ddf-adad-9a0fa504b99f.filesusr.com/ugd/805d2a_086f8541a70d4e8fac73235f8a426a26.pdf?index=trueIn PDF document text
    • http://sitafefisoju.atwebpages.com/straw_man_finance_meaning.pdfIn PDF document text
    • http://suwuriru.onlinewebshop.net/navobig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c0a69ea-6510-4286-a473-0877482831cd/how_to_find_original_photo_date.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/914b6c39-8c35-499e-a918-e914b88e1333/penny_stocks_on_robinhood_today.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cf572d2-4c5a-4661-b2c9-8651f46fe8d6/56070484570.pdfIn PDF document text
    • https://40785fcd-1e5e-4316-9306-5db1d5795eae.filesusr.com/ugd/2f07a1_e40043903e654e62a1489eeaaaaea789.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA75 5248 bytes
SHA-256: 400ee38376b194fc34d9c2373c6daaef0dff167fb14a252b9c11a7e17ab282b3
font_01_sfnt_off0000fc70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC70 10996 bytes
SHA-256: 6ec1523d50e9542a9e95af02b9d6cde949c13c0ad45ce59bb661767cb3f1b2c5

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