Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e0b0b16bcb5e3fe…

MALICIOUS

PDF

76.8 KB Created: 2021-03-16 23:37:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 013fd9fab587b799bf0998d2350b56bb SHA-1: 6b707d482dd8a62f18c9e9374714734473ad6b6c SHA-256: 6e0b0b16bcb5e3fecb08ea01e2b2a33b9427442d44fd5e06fedf9c539116499f
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, a technique often used for SEO manipulation or to redirect users to phishing sites. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to drive traffic to potentially malicious or deceptive external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://seumenha.ru/wix?keyword=entourage+blu+ray+set PDF link annotation
    • https://cdn.sqhk.co/mumesimasozo/ifghjfh/lego_movie_2_movie_maker_video.pdfIn PDF document text
    • http://muwiduvepobuz.mygamesonline.org/how_do_you_program_a_petsafe_collar.pdfIn PDF document text
    • http://ig-socialmedia.xyz/18105687198oa7e5.pdfIn PDF document text
    • http://espaceabone.com/zudevixemadivbkgx6.pdfIn PDF document text
    • http://pugezesiw.mygamesonline.org/bilarojital.pdfIn PDF document text
    • http://nanolenka.xyz/14805817112v96xp.pdfIn PDF document text
    • https://cdn.sqhk.co/jidevumedure/ijaKjaE/suwubawesa.pdfIn PDF document text
    • http://reduslimitalia.website/30049924444gtf3i.pdfIn PDF document text
    • http://gufutaca3.xyz/the_basketball_diaries_book_excerptsjn4yv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e028ba52-6c86-493e-86b7-fecf7cd1c3eb.filesusr.com/ugd/bcb9fd_475e931cc13a4b3abbe65a3b3fc8542b.pdf?index=trueIn PDF document text
    • https://933afb0c-60ca-4ff4-ba38-e7c804ca925d.filesusr.com/ugd/941881_30744285eec5458881bed1b3f53b15a3.pdf?index=trueIn PDF document text
    • https://2eeb51df-07ba-4372-80d9-1ef4646fc7f7.filesusr.com/ugd/6af210_045b7fd6d76f4f3b8852bebe0a7a710f.pdf?index=trueIn PDF document text
    • https://21e323bd-7fdd-46e9-a6c7-4880e76d7610.filesusr.com/ugd/0a51c1_e8e488b0541042bc95e0833072653156.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b4a8503-93af-4bf9-8e14-25f92cffa56d/21408509335.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88a8d634-a54d-43fb-8660-006349b3b271/32060913719.pdfIn PDF document text
    • https://8b5ac0f3-2bc4-49a6-9a99-2541af31b215.filesusr.com/ugd/f2ef67_317d9e78780a45068bf8162ceb46d2da.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2beace0a-0452-41d9-be51-0da74c956d00/wolf_of_wall_street_full_movie_watch_online_dailymotion.pdfIn PDF document text
    • https://393102e6-89af-4738-8cad-89662dba8dc5.filesusr.com/ugd/33a16d_e6ca8ea873e24ecdaf3c0724510dbf71.pdf?index=trueIn PDF document text
    • https://d86ad34a-7df2-4f47-937b-a12ab5abc0fa.filesusr.com/ugd/8cbfce_239d94ec1696403193e17909a8c9b735.pdf?index=trueIn PDF document text
    • https://c78ffd2e-fc3d-4272-86ca-968d835fb7ad.filesusr.com/ugd/0f9ef0_bfc3d998d551433d8ca909112b8ce544.pdf?index=trueIn PDF document text
    • https://a9864912-ad24-422b-99f3-2d90f7703507.filesusr.com/ugd/d6af85_b5182ca095584f2197e843a02c7292ee.pdf?index=trueIn PDF document text
    • https://80c93ba6-74df-4afb-9852-3a83eaba20e3.filesusr.com/ugd/4cf28d_ca9dc87fa4f74acaab32186e1c0286fa.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_off0000efbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBD 5052 bytes
SHA-256: d3c5caa939e96980df4187c1b7456711153c9d74a3d41b78953f5a98a1bd5770
font_01_sfnt_off00010102.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10102 10704 bytes
SHA-256: ff0d047cb86afeb3709fd1935324c529467c61c7ab91af243c3222961a55aafa