Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0ab298950f19ffd…

MALICIOUS

PDF

72.1 KB Created: 2020-08-05 09:56:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad24ee780c26a2652a6489f2da04422e SHA-1: 931f9ce7658da1e28bc82be1fdb6eedfcb8aa64a SHA-256: d0ab298950f19ffdc2fae7e2a36896a0cb4bb671af7d36773fcec4085ce66e03
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=acuerdos+de+paz+de+la+habana+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which are benign Shopify links, but the primary redirector is malicious. The ML classifier strongly supports the malicious verdict. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=acuerdos+de+paz+de+la+habana+pdf
    • http://files.vandunet.com/uploads/1/3/1/8/131856108/4258465.pdf
    • http://files.creatify.media/uploads/1/3/1/4/131406684/nikaj.pdf
    • http://mimur.soundofsilver.net/uploads/1/3/0/8/130813765/ea9dcb40022d.pdf
    • http://files.nspirehomesolutions.com/uploads/1/3/1/3/131380343/6a4acd81f7193f.pdf
    • http://files.misslaurasladybugs.com/uploads/1/3/2/6/132680808/784391.pdf
    • https://cdn.shopify.com/s/files/1/0436/0303/4276/files/google_docs_certificate_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/6688/4250/files/powulapewokibanawewejuve.pdf
    • https://cdn.shopify.com/s/files/1/0438/1461/7250/files/6012371751.pdf
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/sebamumomu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/fevenakejabodeniwijuneri.pdf
    • https://cdn.shopify.com/s/files/1/0432/1889/5010/files/sixeranujonavefezemewoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/2505/5387/files/57188610944.pdf
    • https://cdn.shopify.com/s/files/1/0433/6776/0028/files/mary_balogh_pojedynek_chomikuj.pdf
    • https://cdn.shopify.com/s/files/1/0438/2703/6322/files/prime_number_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/98306794104.pdf
    • https://cdn.shopify.com/s/files/1/0433/2349/0457/files/xatewafarofanim.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_off0000d986.bin
dd8d6506cf043e21fd57e7c9c1d6cb39fabd1c7142a34b2f496ac8b90cc3c41a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD986 5420 bytes
font_01_sfnt_off0000ebef.bin
c985ab849ac708f6666a8032b685a2bf5f21f31d76e4070f826d9d9909e99339		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBEF 11564 bytes

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