Malicious PDF — malware analysis report

Static analysis result for SHA-256 56dadd11955c78fa…

MALICIOUS

PDF

60.8 KB Created: 2020-10-19 17:53:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: eb24aa6ac3ac27f262a6358c06ee660a SHA-1: c47fd98f6aeb41b97c9aefbf9cc72c2129bd2f3d SHA-256: 56dadd11955c78fa018037bda19ef4acfc4d46e5bc0398c76b5ea34bf2bcb481
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=al+quran+bangla+apk+free+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367665/normal_5f87650c9406c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385415/normal_5f8d8e206d0ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_5f88ffff8858d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376857/normal_5f8be12d1797d.pdfIn PDF document text
    • https://derodaju.weebly.com/uploads/1/3/1/6/131606282/1706279.pdfIn PDF document text
    • https://risimukino.weebly.com/uploads/1/3/1/3/131383953/a1bb4245d34c2e9.pdfIn PDF document text
    • https://defelewag.weebly.com/uploads/1/3/2/7/132741475/841832.pdfIn PDF document text
    • https://pukotegifo.weebly.com/uploads/1/3/0/8/130874060/xumilulefiva.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/vigajig.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/juwotiwanet-suvubix.pdfIn PDF document text
    • https://wonigebegi.weebly.com/uploads/1/3/1/6/131606731/dawezuvupulun.pdfIn PDF document text
    • https://mijelowiwiloz.weebly.com/uploads/1/3/1/1/131163856/burabukevumoze-pojonax-zajolo-mudobaza.pdfIn PDF document text
    • https://viwuwobigoku.weebly.com/uploads/1/3/1/3/131378942/molorumewepinizowev.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/1386898.pdfIn PDF document text
    • https://nejalebemenogun.weebly.com/uploads/1/3/1/0/131070187/8724730.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/1408/5544/files/47509466978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3019/7910/files/one_god_one_lord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8276/0601/files/dead_sea_scrolls_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/3474/5253/files/why_things_dont_fall_down_goodreads.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000bf75.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xBF75 21500 bytes
SHA-256: f59f2ff7b854ef82bb9fbc56acece4e163cb1cc38c0d02f739043c0e4434f2f3
font_00_sfnt_off000064f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F5 5440 bytes
SHA-256: 6c1234dcf5b6a5e3220c8f9635c4383eb7ef4209280f7990e80eafa728addff6
font_01_sfnt_off00007788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7788 8216 bytes
SHA-256: 4618a66a9bb8f6cff2879655dc67d56e9b29787746916aa41cd97152f1718f08
font_02_sfnt_off000091e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91E1 14756 bytes
SHA-256: 45ea9c215cc1c51f3de16989020daef4397b39151443ec07d3149cf0c12372b1