Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca7453084a7f7105…

MALICIOUS

PDF

46.8 KB Created: 2020-08-19 22:05:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71170315ea7875fda25e4261170f846d SHA-1: 9d31839dd094dec77e0f05b33503a8630f54271d SHA-256: ca7453084a7f71051f846960a42dae71b09558875ac0f7034cd52ea73add1b9d
120 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=bum+chiki+bum+bum+song'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous links to PDF files hosted on various domains, including potentially malicious ones like 'http://gibof.vaiac.com/'. The document body contains garbled text and a reference to the malicious URL, suggesting it's designed to trick users into clicking the link.

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=bum+chiki+bum+bum+song
    • http://gibof.vaiac.com/uploads/1/3/1/4/131407406/zifoxe_senoxukiluba_sidowozuz_kireretodanozo.pdf
    • http://files.theuneven.com/uploads/1/3/1/3/131384424/7365571.pdf
    • https://cdn.shopify.com/s/files/1/0431/5673/4109/files/list_of_simple_adjectives.pdf
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/55935555991.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5754/files/fexukalon.pdf
    • https://cdn.shopify.com/s/files/1/0432/1506/1153/files/18751422401.pdf
    • https://cdn.shopify.com/s/files/1/0435/9559/5938/files/79853361369.pdf
    • https://cdn.shopify.com/s/files/1/0435/3346/7807/files/syracuse_weather_15_day.pdf
    • https://cdn.shopify.com/s/files/1/0435/3366/4408/files/talawozoxovuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5079/files/lucida_blackletter_font.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_off00006159.bin
be63537d74e2e3f405d5982047fdbc74a37812a00adf90ffec1107e82befa62e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6159 5128 bytes
font_01_sfnt_off000072b2.bin
5d6e70213ccc469581476d6d7c5662deb778d8d400c2d70459241e30e332e534		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72B2 14688 bytes
font_02_sfnt_off0000a0c5.bin
e5d5d2ab45e1d8d6db04e88d0f95dcbc035b838abbe6571f016750bc2587b27e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0C5 3016 bytes

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