Malicious PDF — malware analysis report

Static analysis result for SHA-256 448ccdcf47fbed68…

MALICIOUS

PDF

93.1 KB Created: 2020-08-20 12:26:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd996a3b1c1739c959617e4cce290c74 SHA-1: d503ef1d3db6ba1585bca4473773aa0a30d007e9 SHA-256: 448ccdcf47fbed6890aa963cf03f9b27e5bc1597b5f97b8a3bdefa8f1b0e0255
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a lure related to a 'Canadian passport application form baby' and embeds a link to a known malicious redirector, ttraff.com. This indicates a phishing attempt designed to redirect users to malicious content. The presence of numerous other PDF links, many pointing to Shopify, suggests a link farm strategy to obscure the final malicious destination.

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=canadian+passport+application+form+baby
    • http://files.mykmad.com/uploads/1/3/1/6/131606201/tuzijakitisika.pdf
    • http://files.darrenkaiser.com/uploads/1/3/1/8/131871625/5295677.pdf
    • http://files.kemppta.com/uploads/1/3/0/7/130738704/jirusav.pdf
    • http://gajifamij.ayefilmstudio.com/uploads/1/3/1/8/131856158/zumedenid.pdf
    • https://cdn.shopify.com/s/files/1/0438/4060/2269/files/alejandra_pizarnik_una_biografia_cristina_pia.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87074842841.pdf
    • https://cdn.shopify.com/s/files/1/0432/0113/4747/files/88021092729.pdf
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/hundred_years_war_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/5394/8836/files/nunoboburomuvep.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wijabogose.pdf
    • https://cdn.shopify.com/s/files/1/0434/2513/6792/files/kozegojikomodazakiba.pdf
    • https://cdn.shopify.com/s/files/1/0432/8423/4398/files/65352698444.pdf
    • https://cdn.shopify.com/s/files/1/0436/4707/4464/files/clean_boot_ubuntu.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c64.bin
acec2c314382bfe1a57aa9a68f9f3d2ef6de6518c05093bc716957ba01b64237
pdf-font-stream PDF embedded font (sfnt) at offset 0x10C64 5448 bytes
font_01_sfnt_off00011ec5.bin
459cf17816fe6e9c466d17de6e9b62ab64ff5942f03aeee0cf294d981a4db7f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x11EC5 8436 bytes
font_02_sfnt_off0001365b.bin
1582cef71ffd530089d2d2a0da640711543b0c58fba953e64c6008b832211370
pdf-font-stream PDF embedded font (sfnt) at offset 0x1365B 15340 bytes