Malicious PDF — malware analysis report

Static analysis result for SHA-256 7698bfaad399c8ae…

MALICIOUS

PDF

50.6 KB Created: 2020-08-07 09:20:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0003b28d83fb18518310d2883abde4cd SHA-1: 80d5e47ddf20c5e0b851caa8656ba2612f73f7be SHA-256: 7698bfaad399c8aed9be35bc26cad990cbb95a1885161d318f08597a5405877c
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of the primary links directs to a known malicious redirector infrastructure, suggesting an attempt to lead the user to malicious content. The document body contains garbled text and a URL that appears to be part of the link farm, indicating a potential SEO-based lure or spam campaign.

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.cc/pify?keyword=caratteri+speciali+html+pdf
    • http://files.appliancerepairmacon.com/uploads/1/3/0/7/130740536/5382287.pdf
    • http://files.gt-package.com/uploads/1/3/1/1/131163712/1656c9441c66.pdf
    • http://files.susie-carter.com/uploads/1/3/0/7/130739225/fapalovowomejipuvop.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5719/2853/files/93334487779.pdf
    • https://cdn.shopify.com/s/files/1/0446/9896/0026/files/trophies_aryay_remix.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/takibadepiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/4620/7650/files/rakus.pdf
    • https://cdn.shopify.com/s/files/1/0432/6427/8686/files/star_wars_ahsoka_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/2690/6264/files/boruvasoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/36269644949.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4280/files/jasoboguwixopagolo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1979/5623/files/workday_rising_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/5820/7643/files/nightmare_on_my_street_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0435/2281/8200/files/763475876.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_off00006403.bin
29136f67a78df84d6c5201aa16021b471b8f7a50d9b6efd4ee266b6007e9b644
pdf-font-stream PDF embedded font (sfnt) at offset 0x6403 5300 bytes
font_01_sfnt_off000075da.bin
4138bc5dfe70e05da279949987e4b13d1806b9368dd701b25d89b066228a7d02
pdf-font-stream PDF embedded font (sfnt) at offset 0x75DA 26532 bytes