Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e9b83e5197384f3…

MALICIOUS

PDF

38.1 KB Created: 2020-08-17 16:21:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53537bce2885208ff27fcd9615004297 SHA-1: 9adb67a8295039df9cbed9a23283991866352418 SHA-256: 5e9b83e5197384f3f168a58612c2ff61dfe330ed4fb08f149e2486563453d1ac
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a map download. It also exhibits characteristics of a link farm, with numerous embedded links to other PDFs, many hosted on Shopify. The ML classifier strongly indicates maliciousness, and the overall structure suggests an attempt to lure users to malicious infrastructure.

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.com/pify?keyword=noida+map+sector+wise+pdf
    • http://files.ianthompsonceramics.com/uploads/1/3/0/8/130874067/0c71723ae4953.pdf
    • http://dulufada.rivercliffestates.com/uploads/1/3/0/9/130969204/ragonirepoja-fuzitu-kezirajanexu-xaviwanarabimeg.pdf
    • http://files.marzipan-media.com/uploads/1/3/1/8/131856184/7584706.pdf
    • http://files.jmbmoldings.com/uploads/1/3/1/6/131606280/4675183.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/9733/3668/files/vixikakezunagu.pdf
    • https://cdn.shopify.com/s/files/1/0441/1123/3176/files/download_bhagavad_gita_in_tamil_in_format.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2084/files/gixidemujaka.pdf
    • https://cdn.shopify.com/s/files/1/0432/1378/3199/files/90235430648.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xiguxalenagidofivixonagez.pdf
    • https://cdn.shopify.com/s/files/1/0434/0629/5201/files/popuvuxokobo.pdf
    • https://cdn.shopify.com/s/files/1/0433/1687/1326/files/sample_inventory_stock_status_report.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_off000056d8.bin
7b25a403ddbe872767b0831bd1fbc273847bcb5c2ee811c67f803a492c4363d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x56D8 5328 bytes
font_01_sfnt_off000068fe.bin
75e1747c002968e936d970f8a055c8488a8c0e4fd3d46beb389b67c561473ca2
pdf-font-stream PDF embedded font (sfnt) at offset 0x68FE 10260 bytes