Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9e7d18aac7f88c8…

MALICIOUS

PDF

84.4 KB Created: 2021-04-27 17:33:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3f9c9a683fb6873ea52bc3de096db3d9 SHA-1: 52fe2617977a9be317a899a8dc9ad4fea5eacbfb SHA-256: d9e7d18aac7f88c87d5a87fb77820156b8d08b750f8d53beb654522797be73d0
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 0.9994

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://lozipotod.ru/strik?utm_term=the+princess+bride+movie+free+streaming PDF link annotation
    • http://idealicaitalia-ufficiale.site/amazon_seller_central_usa_registrationhemup.pdfIn PDF document text
    • http://latujor.22web.org/4297852753.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494432/normal_5feb7f5f4909a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403936/normal_601b21ada0560.pdfIn PDF document text
    • https://cdn.sqhk.co/natefisaka/EhbV1xN/e_with_accent_french_keyboard.pdfIn PDF document text
    • http://theplafond.xyz/xenironewunatexudozesapok51k7g.pdfIn PDF document text
    • http://nigasheff.xyz/parirabofakenodexonotuduc538b.pdfIn PDF document text
    • https://cdn.sqhk.co/bijukipuj/eyHoifp/donkey_kong_mine_cart_madness.pdfIn PDF document text
    • http://richteam.site/chartered_financial_analyst_job_opportunitiesnpuv5.pdfIn PDF document text
    • http://bcpzon4segurabetaviabcp.com/viwumuwisixmfdr.pdfIn PDF document text
    • http://ilkertr.shop/61132150997pnbvm.pdfIn PDF document text
    • https://cdn.sqhk.co/lojenozasila/gf4HidL/lujiwelurigim.pdfIn PDF document text
    • http://nuraramibifowom.22web.org/tamil_christian_cut_songs_mp4_free.pdfIn PDF document text
    • http://modutomipofa.iblogger.org/barbie_movies_full_hd.pdfIn PDF document text
    • https://cdn.sqhk.co/rozamulev/ijeiahb/65571968283.pdfIn PDF document text
    • https://cdn.sqhk.co/dubibuwa/D0Zgmii/xodelusivoguwikogesoli.pdfIn PDF document text
    • http://crispyset.online/lupabepuzudasunab5at5.pdfIn PDF document text
    • http://agreevudb.rest/what_does_tin_mean_for_taxes55dft.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421205/normal_603f95d83a9bd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://76ed6b59-b034-43ac-b949-e1c08f76e3cb.filesusr.com/ugd/ee6100_8dfca082d3234e6a8cbd8011a186a000.pdf?index=trueIn PDF document text
    • http://sufumawug.epizy.com/mixed_conditionals_worksheet_with_answers.pdfIn PDF document text
    • http://rozopujonabesix.epizy.com/196905513.pdfIn PDF document text
    • https://65f7c47b-6fa2-4aed-9649-637438a88329.filesusr.com/ugd/8fb471_bead709f157b4954ba10ab996427c674.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_off0001096e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1096E 5688 bytes
SHA-256: c97d6dc0de652d631591522706668802ee5a8fe1f270644cce05a891603153ef
font_01_sfnt_off00011c9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C9C 11616 bytes
SHA-256: fda25fa2dcec8af822c727404bde633560a9fbaec26e9e20d3485c59da4b45bd

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