Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb08ba52edfddc80…

MALICIOUS

PDF

76.2 KB Created: 2021-03-12 01:37:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 45eab09916f51cc8d8bed37f15e1f9d4 SHA-1: 9eee6912844af07795c003a5c423b9e84992ccc8 SHA-256: fb08ba52edfddc8068dd075556a4ece8bb4121d8c2dde568558e7269beabd49a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xajibur.ru/wix?keyword=do+you+underline+article+titles+when+writing+a+paper PDF link annotation
    • https://vunojomilubokub.weebly.com/uploads/1/3/0/7/130775688/ccb4386.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388612/normal_6043098760fb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370267/normal_6010d00015197.pdfIn PDF document text
    • http://kosamaritaj.getenjoyment.net/good_morning_happy_monday_inspirational_quotes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412173/normal_6003ea7ab54a3.pdfIn PDF document text
    • http://wimesuzajomos.mypressonline.com/gimuf.pdfIn PDF document text
    • https://cdn.sqhk.co/liregevo/kEX2ggc/the_banner_saga_review_game_informer.pdfIn PDF document text
    • https://kizutete.weebly.com/uploads/1/3/4/0/134000266/litibik_salag_rilogabizite.pdfIn PDF document text
    • https://cdn.sqhk.co/raxuzuvuluf/cihheax/flame_hero_names.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/CqieBgc/sipebasaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9eaa565e-fb97-40b4-b096-d6760803f699.filesusr.com/ugd/55e2c6_a67c71a71afa4eb1ae14b94b912f7138.pdf?index=trueIn PDF document text
    • https://c4cd0dbc-23d7-4f11-b65f-2561cec8abe5.filesusr.com/ugd/516793_56420ee8e51f4888a9a606b4a7f84b30.pdf?index=trueIn PDF document text
    • https://efa91360-7c21-416c-9d60-3189e0beb381.filesusr.com/ugd/42ffc7_bf3ea41f77e748708c0ac24f8974ceea.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/benuka/goduwelefegefubasureni.pdfIn PDF document text
    • https://74269c25-1731-4359-90d4-804f54ef9c1c.filesusr.com/ugd/b5973a_f17c4dce8c3a4a02b3208e9430db090f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/apache_files_from_server.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/food_and_beverage_hd_images.pdfIn PDF document text
    • https://3f46bf15-0a8c-4e80-b3e5-a2e3bf90e008.filesusr.com/ugd/8e6e76_9fa94536c0c64f29808fc6b3d9189b34.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_off0000edc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC2 5528 bytes
SHA-256: 98d77afbb798dc99c084cfff5bfb880625d37ac4aad626927f4ab3ef1785affd
font_01_sfnt_off000100a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A8 10184 bytes
SHA-256: 43e510abddd777c0ab596c17e0396e0d574dbb9fa6b6a3bebd143e5a40dd30be

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