Malicious PDF — malware analysis report

Static analysis result for SHA-256 244af48f06675d79…

MALICIOUS

PDF

42.4 KB Created: 2020-08-21 02:01:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85d31b1162b1624b50a6a61dd43e63b5 SHA-1: 240f100895b4766f08ca6cf41a71b3b3020a6de9 SHA-256: 244af48f06675d792fc8d9a2675705542819346bc7240f3fbd6b2f1950a5a3fa
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, many of which point to external resources. One URL, 'https://ttraff.cc/pify?keyword=html+form+submit+button+size', is identified as a malicious redirector. The presence of a PDF link farm suggests an attempt to manipulate search engine results or distribute spam content. No scripts were extracted, and the document body was largely unreadable, limiting further analysis of the specific lure.

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.cc/pify?keyword=html+form+submit+button+size
    • http://nekenoluw.gumcpreschool.org/uploads/1/3/2/7/132710589/bb6c998e1de642.pdf
    • http://files.raksthaiplp.org/uploads/1/3/0/7/130776338/fufurok-vixinusaf.pdf
    • https://cdn.shopify.com/s/files/1/0435/4605/0728/files/texosobepup.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/catgut_simple_y_cromico.pdf
    • https://cdn.shopify.com/s/files/1/0436/3013/3406/files/73065459723.pdf
    • https://cdn.shopify.com/s/files/1/0433/4636/2527/files/29527243264.pdf
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/43216855953.pdf
    • https://cdn.shopify.com/s/files/1/0432/7748/4196/files/ghostscript_combine.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/18865063705.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/animales_en_peligro_de_extincion_en_el_salvador.pdf
    • https://cdn.shopify.com/s/files/1/0434/8359/4909/files/zezegawununemig.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_off00006007.bin
306e024c9128188873443b7f572b5f80b55d9d91ce788de9e1ee7edbc6b3629d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6007 4852 bytes
font_01_sfnt_off0000707b.bin
9f2f9ff3cc308df01579ad0df6b4bb5e9405a4eba84a6665f6b4610fe1cdb038		 pdf-font-stream PDF embedded font (sfnt) at offset 0x707B 14228 bytes

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