Malicious PDF — malware analysis report

Static analysis result for SHA-256 272e8fb0321f85af…

MALICIOUS

PDF

45.9 KB Created: 2020-08-09 14:06:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 541f5f932ab7ed042b7664bc105e9866 SHA-1: 40b9e79ea305735e9aeec065f99a3c49fd0d2efb SHA-256: 272e8fb0321f85afb213823f7d3856e1348507cd5a1da17a3c3be47dbbd64085
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a mass of external links, many of which are SEO-optimized with numeric slugs. One prominent link, disguised as a tutorial, redirects to a known malicious URL. This indicates a phishing or redirection attempt, likely to deliver a secondary payload or lead the user to a fraudulent site. The document body itself is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf.

Heuristics 3

  • 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.
  • 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=cinema+4d+modeling+tutorials+pdf
    • http://mufot.goshawarmastop.com/uploads/1/3/1/0/131070792/topadojax.pdf
    • http://vufipezeg.livelifewelltherapy.com/uploads/1/3/0/8/130813765/330124.pdf
    • http://files.metzteaching.net/uploads/1/3/2/7/132710787/4698931.pdf
    • https://cdn.shopify.com/s/files/1/0437/1726/3510/files/28997955130.pdf
    • https://cdn.shopify.com/s/files/1/0437/8974/6337/files/xoxekujomesiweges.pdf
    • https://cdn.shopify.com/s/files/1/0433/6936/5654/files/kozekuwitebapa.pdf
    • https://cdn.shopify.com/s/files/1/0434/2880/6807/files/xobadit.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/luzubewamuzedebike.pdf
    • https://cdn.shopify.com/s/files/1/0432/4235/6904/files/futavexoravatubogajis.pdf
    • https://cdn.shopify.com/s/files/1/0430/4545/3985/files/gifewejopamobe.pdf
    • https://cdn.shopify.com/s/files/1/0438/9906/0392/files/poxivevavosumomenagesa.pdf
    • https://cdn.shopify.com/s/files/1/0434/0485/3402/files/novej.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/99539275329.pdf
    • https://cdn.shopify.com/s/files/1/0441/0392/5912/files/zatibuxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/golas.pdf
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/snes_mortal_kombat_moves_list.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_off0000680b.bin
d73ffd21c0c000ae4afc13f9330dc1e71f0851664b25148048e59f0316f18221		 pdf-font-stream PDF embedded font (sfnt) at offset 0x680B 5352 bytes
font_01_sfnt_off00007a2a.bin
34125634de235e18f797aa2b3cf1b961884b0407f1475928f1da3bf8457b2290		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A2A 10004 bytes
font_02_sfnt_off00009c5a.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C5A 4324 bytes

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