Malicious PDF — malware analysis report

Static analysis result for SHA-256 dba56158543a2712…

MALICIOUS

PDF

37.3 KB Created: 2020-08-17 08:45:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71d18bbbafd17818d950a8b2eb7276e7 SHA-1: 5cc3318bba8fc74ae1f3ad2f9a7a92e63c759aad SHA-256: dba56158543a271232cbc9b4fe424da4f5e66535abc462d25c26e24282ee622f
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'nutritional information' and includes the URL that triggered the malicious redirector heuristic. This suggests the document is a lure to redirect users to malicious content. 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.com/pify?keyword=nutritional+information+roasted+peanuts+in+shell
    • http://files.massrealestatewholesalers.com/uploads/1/3/1/4/131454523/863b2459.pdf
    • http://files.spmedical-illustration.com/uploads/1/3/1/4/131408103/29240.pdf
    • http://pasog.projecthopemichigan.org/uploads/1/3/0/7/130740572/5782771.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/42797844004.pdf
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/4782236902.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3912/files/dijamulaliwoporazefuti.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4637/files/55417569015.pdf
    • https://cdn.shopify.com/s/files/1/0432/7574/7491/files/tewavurev.pdf
    • https://cdn.shopify.com/s/files/1/0434/1301/2637/files/barurivikoboroditofofixip.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/gukawumunutonopep.pdf
    • https://cdn.shopify.com/s/files/1/0429/8843/7655/files/fowaselizuwep.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sakemiribukewud.pdf
    • https://cdn.shopify.com/s/files/1/0431/7849/2072/files/61416547110.pdf
    • https://cdn.shopify.com/s/files/1/0435/2068/8282/files/between_worlds_a_reader_rhetoric_and_handbook_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/1290/5370/files/44087272818.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_off00005466.bin
334b4074121e2ed40a157d4860eccab30f9a5a3ebc61ef30421edc81a26ded56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5466 5248 bytes
font_01_sfnt_off00006617.bin
da8c6b6bc11c6286b91c1c8bd6949994bf28f484869acb9c3aaf7aaa55496217		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6617 9940 bytes

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