Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f0948d74af1cd8c…

MALICIOUS

PDF

43.2 KB Created: 2020-10-14 21:07:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 62010b57df5437b584e511533b3bccf3 SHA-1: 7af6612243f7111113bdeb12399c7333c28942d9 SHA-256: 2f0948d74af1cd8cbc99bbad7dbb23336ddaf28b69332b060ae0107a639d415c
124 Risk Score

Malware Insights

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

The PDF contains a malicious redirector URL embedded within its body, disguised as a legitimate document title. This URL, 'https://ttraff.link/pify?keyword=cisplatin+mechanism+of+action+pdf', is flagged as malicious and likely serves as a lure to a further malicious destination. The ML classifier strongly indicated maliciousness, and the PDF structure itself is indicative of a redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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.link/pify?keyword=cisplatin+mechanism+of+action+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5f86fad34e8b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366344/normal_5f870ead85c91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f870ce82ee80.pdfIn PDF document text
    • https://site-1048517.mozfiles.com/files/1048517/65401541655.pdfIn PDF document text
    • https://site-1039150.mozfiles.com/files/1039150/72349871322.pdfIn PDF document text
    • https://site-1039222.mozfiles.com/files/1039222/vutoniniguxetumuraz.pdfIn PDF document text
    • https://site-1037890.mozfiles.com/files/1037890/rivofeworumuli.pdfIn PDF document text
    • https://site-1039431.mozfiles.com/files/1039431/43234793234.pdfIn PDF document text
    • https://site-1043978.mozfiles.com/files/1043978/66206364414.pdfIn PDF document text
    • https://site-1039661.mozfiles.com/files/1039661/71490788924.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/f3996c6d-f148-42ae-9480-e06cb0fd2e24/80295580815.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99d88d67-7e8f-4212-93f5-1713127466f8/3729229801.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23cee1a9-3013-4915-9252-47fdcb995e7b/5169091949.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/236e0847-a505-4256-b0ff-e554a5d653a2/kabasu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50d44224-4cea-4416-bf15-be3da5670faf/welupebesagomila.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba5bae69-781e-4f6a-87e8-6d741c5d94ad/kuzupox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/903ff7e4-f714-4046-b38f-11cd1f6dafae/redanifurenak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4ee602c-6e3d-4185-823d-0a5109b5f7cc/fekabepusiravodofut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15fb2880-6af0-42e1-805d-d324b8e65c1e/90255840013.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2F 5204 bytes
SHA-256: 5baad1df3e5ecd2c11e11c2f16b35bbb9e9540cf77d3708d59007464d639d1de
font_01_sfnt_off00007db5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB5 9908 bytes
SHA-256: 1c2a86843b2cd8c66dfeef77cb2c2bd1bab0bc9397fa682ee85837070eff0d4a

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