Malicious PDF — malware analysis report

Static analysis result for SHA-256 49aa1d3b7dca0c20…

MALICIOUS

PDF

54.9 KB Created: 2020-08-10 21:23:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 772d78dd3060703ca37666affa8da1ed SHA-1: be8a81642e4a5abebce1a177c0c53c17ff6ebd81 SHA-256: 49aa1d3b7dca0c2031e523562b9b7ce501c849ff460af6c645334fe90e6d1ead
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used to redirect users to malicious sites. One of the primary URLs, 'https://ttraff.ru/pify?keyword=asterix+als+gladiator+pdf', is flagged as a known malicious redirector. The document body contains garbled text and embedded URLs, further supporting the malicious intent. No scripts were extracted from this sample.

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.ru/pify?keyword=asterix+als+gladiator+pdf
    • http://files.budgetbrickandstone.com/uploads/1/3/1/4/131454850/5626463.pdf
    • http://files.sesamecorner.com/uploads/1/3/0/7/130738803/3507360.pdf
    • http://limif.pontoonbaptistchurch.org/uploads/1/3/1/4/131408027/kowodatiju.pdf
    • http://nulored.eliterateandlevelingup.com/uploads/1/3/2/8/132814930/5536056.pdf
    • http://files.suncoast-gems.com/uploads/1/3/0/7/130775866/begijufininab.pdf
    • https://cdn.shopify.com/s/files/1/0439/3598/9915/files/antony_hamilton_freedom.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/menanapalirufefazalul.pdf
    • https://cdn.shopify.com/s/files/1/0434/3611/4076/files/220834824.pdf
    • https://cdn.shopify.com/s/files/1/0432/3845/7508/files/47912789623.pdf
    • https://cdn.shopify.com/s/files/1/0435/9494/0573/files/12309019451.pdf
    • https://cdn.shopify.com/s/files/1/0429/8076/9951/files/welewugif.pdf
    • https://cdn.shopify.com/s/files/1/0436/0595/0626/files/jituzixo.pdf
    • https://cdn.shopify.com/s/files/1/0450/8601/5640/files/split_merge_files_online.pdf
    • https://cdn.shopify.com/s/files/1/0433/2647/2345/files/dasoguf.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_off00007ba9.bin
96241a51cb8ac39ebf6fc23a1695f080de52f8536e4a133c369526374780293d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA9 5264 bytes
font_01_sfnt_off00008da5.bin
8ab145befa3c1df920a8354fb4d9c37c5c47789f5d333339747108f0893d91b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA5 15684 bytes
font_02_sfnt_off0000bcd3.bin
b564bedd52d078d7de5853f2da613a8378c4989ad0d564a7ed0674ed1f26c740		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCD3 6472 bytes

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