Malicious PDF — malware analysis report

Static analysis result for SHA-256 12010ef3b7be8f29…

MALICIOUS

PDF

45.0 KB Created: 2020-10-25 06:33:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 7b620c42b9fd635b3d4f7291b5541370 SHA-1: 0fb144e7447fa5ef88938062fc8184ee5f148381 SHA-256: 12010ef3b7be8f29317f6605c5994e27c191903b9dc749fb41ed7ab3bcd65592
184 Risk Score

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.me/123?keyword=catalogue+marjane+juillet+2020+pdf In PDF document text
    • https://debasomi.weebly.com/uploads/1/3/0/7/130739769/36c49491e0d4.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/1281184.pdfIn PDF document text
    • https://besavikeneg.weebly.com/uploads/1/3/2/8/132815808/3b81d9366.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380859/normal_5f8bee5124f47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366032/normal_5f872cf137ef7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365576/normal_5f91ea03d34c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5f88495d792de.pdfIn PDF document text
    • https://vodexekuteb.weebly.com/uploads/1/3/0/7/130776001/jipadanezamiwo.pdfIn PDF document text
    • https://mejefarekobuk.weebly.com/uploads/1/3/4/3/134338461/388107e7b635a60.pdfIn PDF document text
    • https://nabisipiguges.weebly.com/uploads/1/3/4/4/134432296/6197219.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/5460038.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000052ca.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000052ca.bin)
    • https://uploads.strikinglycdn.com/files/e986de2a-9326-4c7e-ac39-78b294ec0c8e/factual_report_teks_animal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75553d57-39a4-4d52-9a93-cb11f33eb4b0/86500298820.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/703d16f1-f323-45ac-a9de-d4cab887927c/mezibeva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaad5512-0152-43c7-b937-c50b6ba4a832/golonurimorasewadom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9da92a1e-d4db-4d27-bc83-d5048496a4ec/kawobixarabopuxemowudibuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4494/5051/files/89381856577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6597/4440/files/roloziv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9910/5701/files/kitchenaid_coffee_pot_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0489/3016/0824/files/xafelu.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/sd_yadav_maths_book_in_hindi_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/60153264282.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/kirchhoff_rule.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 extracted file (font_00_sfnt_off000052ca.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off00008831.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off00008831.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52CA 5440 bytes
SHA-256: 1b18ee6c84360ffd618b6893d8ba8061aa70e192fba9e32ba1c4ffe6d0ac3ef0
font_01_sfnt_off00006536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6536 10476 bytes
SHA-256: 2bc1b13c45c3db41cbf2ab794eea321840b2a5bb5288b4992383d006c742d712
font_02_sfnt_off00008831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8831 18644 bytes
SHA-256: 33cb17518a6e2f54b78e074b9bd9a89b7f1c46687414f742a56bf1e0576aed1d