Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b29c9e4ccf9851…

MALICIOUS

PDF

44.8 KB Created: 2020-08-06 17:00:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7c3712f8c53a4e4d57d988e5fd26405 SHA-1: 43e45d77b5285543bce209ee69e3a6ffe8498838 SHA-256: 72b29c9e4ccf98519313aae6c850e0cbd9f0dd33a5c27f561dd5d903a77efbb3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, masquerading as a 'full bible timeline pdf', to a known malicious redirector. The primary purpose appears to be directing users to malicious infrastructure, likely for further exploitation or phishing. The ML classifier strongly supports the malicious verdict.

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 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.
  • 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.ru/pify?keyword=full+bible+timeline+pdf
    • http://files.lifecenterads.org/uploads/1/3/1/6/131637419/wevavobun-dutawuwexa-wevewefirivobi.pdf
    • http://sasak.endurancegbsouthwest.com/uploads/1/3/1/4/131483154/degukisoxeseg.pdf
    • http://files.dennismccalmont.com/uploads/1/3/0/8/130873872/6f9d258756f11f4.pdf
    • http://files.prodenconstruction.com/uploads/1/3/1/4/131438464/tawotido.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/0985/1048/files/94838489111.pdf
    • https://cdn.shopify.com/s/files/1/0430/3860/5461/files/purofuruzivibavetugus.pdf
    • https://cdn.shopify.com/s/files/1/0439/0954/6136/files/rifokero.pdf
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/gejulova.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/40799335103.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/area_del_triangulo.pdf
    • https://cdn.shopify.com/s/files/1/0438/8644/4696/files/anestesia_general_y_regional.pdf
    • https://cdn.shopify.com/s/files/1/0433/2558/7610/files/bangalore_map_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/young_again_in_another_world_light_novel.pdf
    • https://cdn.shopify.com/s/files/1/0441/2869/8520/files/kotor_2_mobile.pdf
    • https://cdn.shopify.com/s/files/1/0440/9311/2472/files/wagufot.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c31.bin
191f769e5fac193e58fd6c9c62dd15e21d60843f852871af0f49791c69c1dde7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C31 4800 bytes
font_01_sfnt_off00007c71.bin
15c49059a628a00cd2b5ba9b1644a47583c836f5958681eba24a30151f3b1330
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C71 13712 bytes