Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6fe9cf8945aee59…

MALICIOUS

PDF

87.3 KB Created: 2021-03-20 02:10:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 813557bac656bf1ddf5c04837da1a778 SHA-1: 96537ab3634e943dc16b4672603d3a69f6f7b030 SHA-256: f6fe9cf8945aee59af9bf803a183bfaf1838f8058eb3a9b6eb0777cd8d0d16da
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://soxebez.ru/wix?keyword=megalovania+download+mp3+paw PDF link annotation
    • http://palitra-cveta.ru/67167907227ycaca.pdfIn PDF document text
    • http://xewodatesuporob.mypressonline.com/69386769836.pdfIn PDF document text
    • https://bexulijariva.weebly.com/uploads/1/3/4/8/134885506/1854038.pdfIn PDF document text
    • http://detozube.scienceontheweb.net/34418669614.pdfIn PDF document text
    • https://wesoxiworikezux.weebly.com/uploads/1/3/1/3/131380467/2c52b2.pdfIn PDF document text
    • http://fenellalucynelle.info/how_do_you_get_my_service_engine_soon_light_offmqyzy.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/5b681f75-8ee5-4b6a-8249-753c51ee9e95/master_machine_learning_algorithms_spreadsheets_download.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/basic_esl_vocabulary_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bbb7b47-7669-4044-b684-97f35b0aecb0/vabefaremaxigulu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb2d7d4e-c481-4d2f-a740-0f2a28319098/10066534598.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29e39a7d-160a-4bfb-912e-2cfcd2378e54/bebamowudim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/596a408b-8b03-438f-ad66-17d48824c3f7/2012_vw_passat_transmission_fluid_change_interval.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/muxalujeweretufus.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/78941802069.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/zuteliluxivinim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8928013d-557b-434d-9b47-5fb0e448469d/17000584534.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e53f4d1-4cd8-4e0a-b829-03388326993a/french_reflexive_verbs_worksheet_tes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a1d1780-fd97-4e2b-8e0b-33572c638951/nitenisefeto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/817d54ca-8ddd-4fe4-ba50-87c2232ccf5b/95818194676.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/836277151.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC77 5324 bytes
SHA-256: 4087a1743383c9ceac9feffc7cd9731bf12a674f84c83d4d5e8a6bd844b001f2
font_01_sfnt_off0000feaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEAA 2456 bytes
SHA-256: 31a07d1b461a29884b49c92718b92fc2429db4fcdb5bfd7550e3994c8bff0556
font_02_sfnt_off0001097b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1097B 13048 bytes
SHA-256: 14677fe78c0e9584a5d55ffcfdb513dbec3b3629dd1d179d109937b8053f5e5b
font_03_sfnt_off000134fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134FC 16976 bytes
SHA-256: 7f4752b63da1d7c2dcd837afe20865fe56d16ff8c806657139f522dc86ea2af2

Open this report in the interactive analyzer, or submit your own file for analysis.