Malicious PDF — malware analysis report

Static analysis result for SHA-256 acb51895ade84565…

MALICIOUS

PDF

41.6 KB Created: 2020-07-10 11:59:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e066989be24f0d9e32853fbb458491d SHA-1: 574c85cb3cc21db01cf80b5fb97dc2ed132ef3c2 SHA-256: acb51895ade84565c99fdbc521ae9482ac22b42316d51e2a81d36efaabb08ddc
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified as a PDF SEO link farm. One critical heuristic indicates a link to known malicious redirector infrastructure. The document body itself contains a mix of seemingly random text and URLs, reinforcing the malicious redirection and SEO spam 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/wb?keyword=christian%20hermeticism%20pdf
    • http://files.celinedionweloveyou.com/uploads/1/3/1/8/131856356/visuvibekowuborup.pdf
    • http://files.jackiedeephotography.com/uploads/1/3/1/1/131163953/sefofejos.pdf
    • http://files.hsc3knives.com/uploads/1/3/0/9/130969243/a00465f049b.pdf
    • http://files.nrisa.org/uploads/1/3/1/4/131408528/tojekef.pdf
    • http://files.pccyorktown.com/uploads/1/3/1/6/131606429/zubidelikigil_kilozejepatabu_dowifuz.pdf
    • http://files.reneegiblin.com/uploads/1/3/1/8/131856950/fff120.pdf
    • http://files.ohayosensei.com/uploads/1/3/1/6/131606465/8363773.pdf
    • http://files.healingisappealing.com/uploads/1/3/1/4/131437603/xetukibakizez_jupoxevika_gopikubagifopo.pdf
    • http://files.the365church.com/uploads/1/3/2/7/132740618/fafelaxukojawobig.pdf
    • http://files.getitwright.com/uploads/1/3/0/7/130776788/pufim-fafopunatobi.pdf
    • https://magatefijom.files.wordpress.com/2020/06/nanipugurowodol.pdf
    • https://wakatox.files.wordpress.com/2020/06/9685107547.pdf
    • https://milinubed.files.wordpress.com/2020/06/8827501062.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/giratajolexodomofavewolov.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sujufizolotedugogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kusamusa.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_off00006654.bin
01c8b2e251bf038dbe14630b0cbe8fbcdcdec59aa9407016a6cc43cf5b929fa0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6654 5064 bytes
font_01_sfnt_off0000775a.bin
828d9f132206c768619f6c179cec79cf01beeb8709bd7beb60c6aa8964954cf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x775A 10076 bytes

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