Malicious PDF — malware analysis report

Static analysis result for SHA-256 24d619fed78b176c…

MALICIOUS

PDF

41.7 KB Created: 2020-08-07 06:55:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8853e3cdfe13a5e487411692a48d3fd0 SHA-1: b2d39a89c2070293fa0651adc1a3f7adc7ac8345 SHA-256: 24d619fed78b176cb97822da24b7cad519351fb2eeb7dda02134b2267db6a835
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 it links to known malicious redirector infrastructure. The document body text and embedded links suggest a lure for downloading content, specifically mentioning 'icao annex download pdf'. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=icao+annex+download+pdf', which is likely used to redirect the user to further malicious sites. The file also exhibits characteristics of a link farm, with many external PDF links.

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=icao+annex+download+pdf
    • http://files.atkinsonathletics.com/uploads/1/3/0/9/130969830/mibinu.pdf
    • http://files.worldhistorywithmrjohnson.com/uploads/1/3/0/9/130969494/nosotowuleb.pdf
    • http://files.cizellelouw.com/uploads/1/3/1/4/131406947/saxebit-sonezuvufufuf.pdf
    • http://files.one21i.com/uploads/1/3/1/4/131482832/kekijoloforese-mivodinebebu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8176/7841/files/difference_between_c_and_java.pdf
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/88480963232.pdf
    • https://cdn.shopify.com/s/files/1/0430/9650/6521/files/advanced_engineering_mathematics_by_rk_jain_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/kuluzitoxitimebozi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1379/9064/files/kawilelamesufefomu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7405/files/19341402177.pdf
    • https://cdn.shopify.com/s/files/1/0437/6277/8264/files/applied_descriptive_geometry.pdf
    • https://cdn.shopify.com/s/files/1/0432/8397/2256/files/16439355874.pdf
    • https://cdn.shopify.com/s/files/1/0432/5595/5619/files/58526683623.pdf
    • https://cdn.shopify.com/s/files/1/0432/2240/1192/files/46376704712.pdf
    • https://cdn.shopify.com/s/files/1/0437/5340/6618/files/apc_smart_ups_2200_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/33430596036.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/
    • https://cdn.shopify.com/s/files/1/04

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062f8.bin
92d69d9c4afacf82c840e7ee2d2314dabc94c2c4253e110a510039fdb902d30f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62F8 4972 bytes
font_01_sfnt_off00007417.bin
b1658d4bb5d5935d2cd6fbbba74e2c15fb5b93564f280b20fcb5bb503be26bca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7417 11560 bytes

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