Malicious PDF — malware analysis report

Static analysis result for SHA-256 b416315a8a9a9c1b…

MALICIOUS

PDF

42.1 KB Created: 2020-08-12 19:19:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90126e4c6843f5a932de0ef0b97ec197 SHA-1: aad72e9483c20216c5dee3fb461b0df3b8edbf32 SHA-256: b416315a8a9a9c1b9ffb22106cce69f7a05ebf169bdbeca1ceac977d07d36fa5
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains a URL that points to a redirector, which in turn leads to a link farm hosted on Shopify. This suggests a phishing or scam attempt to drive traffic to malicious sites.

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/wb?keyword=difference%20entre%20un%20manager%20et%20un%20leader%20pdf
    • http://vudexugis.queerapocalypsesolutions.com/uploads/1/3/1/6/131607600/c9e12a.pdf
    • http://files.kathleenmoranart.com/uploads/1/3/1/0/131070374/kufelewekusapajelop.pdf
    • http://vikuri.mrginn.com/uploads/1/3/0/8/130814179/9237254.pdf
    • http://bujosor.redlandoakspta.com/uploads/1/3/0/9/130969060/b6f2cf.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/nirugigalomowe.pdf
    • https://cdn.shopify.com/s/files/1/0435/7432/9499/files/boritebisixujonamisilo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zilifevuzumojewod.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51268900441.pdf
    • https://cdn.shopify.com/s/files/1/0438/2975/6066/files/rasinegivezapoxubuvuxup.pdf
    • https://cdn.shopify.com/s/files/1/0429/1543/0559/files/piwumenije.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/17228828206.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40133843423.pdf
    • https://cdn.shopify.com/s/files/1/0438/2490/6400/files/beats_solo_3_wireless_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/3031/4151/files/37320926112.pdf
    • https://cdn.shopify.com/s/files/1/0439/3798/8766/files/acuerdo_comercial_union_europea_ecuador.pdf
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/zupowabipupokegoz.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006731.bin
6f0e0a84045937997759c08cfdf165e3f76d15f1a560c472a7d59336f1b4658c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6731 5296 bytes
font_01_sfnt_off0000791d.bin
3e89d3b689ef00f59b581d99daae99674c669616e82742f88429af81531b0f22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x791D 10072 bytes

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