Malicious PDF — malware analysis report

Static analysis result for SHA-256 410712288a20254f…

MALICIOUS

PDF

51.3 KB Created: 2020-08-19 17:59:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49c6ae8c8e8035e38267643d4255b40b SHA-1: 842e60e34f1a0b99681eaa49c35f614ea81c9362 SHA-256: 410712288a20254fc603b16874f79a43493ce529df42a378dba784fa612af0e1
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though partially corrupted, contains text suggesting a lure related to 'latex book template overleaf', which aligns with the malicious URL. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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=latex+book+template+overleaf
    • http://files.fccwareham.org/uploads/1/3/2/7/132740860/4414195.pdf
    • http://files.mckinneysfoodcenter.com/uploads/1/3/1/6/131606563/b0b44cfe5c6.pdf
    • http://wuniritaw.midwestthriantarba.com/uploads/1/3/0/9/130969352/6868239.pdf
    • https://cdn.shopify.com/s/files/1/0432/1715/8312/files/ruxas.pdf
    • https://cdn.shopify.com/s/files/1/0434/2641/4749/files/36847430906.pdf
    • https://cdn.shopify.com/s/files/1/0428/3059/4204/files/21365812010.pdf
    • https://cdn.shopify.com/s/files/1/0437/8319/2727/files/61428946052.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/metegemekipezafekude.pdf
    • https://cdn.shopify.com/s/files/1/0427/6404/2396/files/22384608309.pdf
    • https://cdn.shopify.com/s/files/1/0433/6055/1070/files/28013786377.pdf
    • https://cdn.shopify.com/s/files/1/0431/5181/8903/files/sad_breakup_dp.pdf
    • https://cdn.shopify.com/s/files/1/0432/5723/3576/files/tabivobi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/acronis_true_image_for_linux_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/nuroxajezikeso.pdf
    • https://cdn.shopify.com/s/files/1/0431/4690/3701/files/87756656148.pdf
    • https://cdn.shopify.com/s/files/1/0432/4930/3720/files/51539864170.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_off00006164.bin
abb872a525242fcca484a24536f9bfb079bd77528c3e2035299b77ebdf12ce50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6164 12008 bytes
font_01_sfnt_off000088e3.bin
bfdedd57635a4c3bf67664cadcba2e817b076173f56077ef3d269a07b562ea15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88E3 5144 bytes
font_02_sfnt_off00009a5d.bin
df57819cb9f127026771dd5b979aadb091edc70f9e297631abab0ab2747636c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A5D 11316 bytes

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