Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee630f149463c347…

MALICIOUS

PDF

58.7 KB Created: 2020-10-04 09:50:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 45093c629936ceab22748dde0db063bb SHA-1: b084347381193516a26fe209322e7270940bad86 SHA-256: ee630f149463c347ad6b518e5a730c9296b96631fba19be4a52688520a481578
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of embedded links, with critical heuristics identifying it as a malicious redirector and a link farm. One of the primary links, 'https://ttraff.club/pify?keyword=ravnica+allegiance+limited+strategy', is flagged as a known malicious redirector. The document's structure and numerous external links suggest an attempt to manipulate search engine results or direct users to potentially harmful content, rather than providing legitimate information.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.club/pify?keyword=ravnica+allegiance+limited+strategy In PDF document text
    • http://tador.operativedentistryturin.com/uploads/1/3/2/8/132816066/gikupububasuguno.pdfIn PDF document text
    • http://files.lightningelitecheer.com/uploads/1/3/2/6/132695543/9172997.pdfIn PDF document text
    • http://files.montessorihill.com/uploads/1/3/2/6/132682620/rokudumotudupu.pdfIn PDF document text
    • http://jasepuz.ranvill.com/uploads/1/3/2/6/132683071/1901967.pdfIn PDF document text
    • http://files.reallyartistic.com/uploads/1/3/0/9/130969673/bef361dd.pdfIn PDF document text
    • http://tajuti.bradycampaignsd.org/uploads/1/3/0/7/130775823/dategof.pdfIn PDF document text
    • http://files.paoniacherrydays.com/uploads/1/3/0/7/130776578/bc23f8c4.pdfIn PDF document text
    • http://files.bdmarketers.com/uploads/1/3/1/4/131406437/9a0b72.pdfIn PDF document text
    • http://nenezobo.rkuclip.com/uploads/1/3/1/6/131637308/8beff61e8606b05.pdfIn PDF document text
    • https://site-1040785.mozfiles.com/files/1040785/63048015188.pdfIn PDF document text
    • https://site-1037844.mozfiles.com/files/1037844/ruwanef.pdfIn PDF document text
    • https://site-1038790.mozfiles.com/files/1038790/61149870819.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/9de50a3c-21b9-42ca-88b3-3bbfed5b4c51/92338098552.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcc9a393-9ebd-48f9-b50f-cca92251dce2/38521943842.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_off000085ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85EC 2972 bytes
SHA-256: 0bf9469f6cbf64c0badb18945d2c2eb4c7a4e472e7aacda42aec409c4e2fe86d
font_01_sfnt_off0000906f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x906F 5428 bytes
SHA-256: f2cb823bc35046f04df1f0f3b80585713726085f7dde9d799cd25337e38e7a4d
font_02_sfnt_off0000a2df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2DF 10724 bytes
SHA-256: 2e6bda53d0472e5f54dc850f8b327c51763bb9ae3cf65397b37a2737c4b4a071
font_03_sfnt_off0000c73c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC73C 16312 bytes
SHA-256: aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0