Malicious PDF — malware analysis report

Static analysis result for SHA-256 980c5db4147f4586…

MALICIOUS

PDF

41.6 KB Created: 2020-08-11 03:54:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f54a5fbd31e9e1b854f30d209d3115c SHA-1: 00428b6ef9569f1f476bc0c58e257fe0fdec6dcb SHA-256: 980c5db4147f458617744413cec90293f515dc3229c7b2d85cc04c8347e0dfd7
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, with one identified as a malicious redirector. The document body is heavily obfuscated but contains the URL that triggered the malicious redirector heuristic. The presence of numerous links suggests an attempt to manipulate search engine results or to hide malicious destinations within a large list of seemingly benign ones.

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=numbers+in+french+pdf
    • http://files.cony.studio/uploads/1/3/1/6/131606056/3985258.pdf
    • http://sawox.cfuwhh.ca/uploads/1/3/1/8/131871674/5334236.pdf
    • http://vasud.annaengels.com/uploads/1/3/1/6/131636648/relaxobi_kikerogikazuvo.pdf
    • http://files.101dogdilemmas.com/uploads/1/3/1/8/131858043/zodedigusoza.pdf
    • http://vejen.destrierbooks.com/uploads/1/3/1/4/131408899/zevami_kadepidanev.pdf
    • https://cdn.shopify.com/s/files/1/0450/2516/5470/files/65600814469.pdf
    • https://cdn.shopify.com/s/files/1/0429/0736/9639/files/38872082772.pdf
    • https://cdn.shopify.com/s/files/1/0434/0862/1719/files/bugapelaruxujavoralagem.pdf
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/mowaxejepevipupesabi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kuvesagapixunijibofalase.pdf
    • https://cdn.shopify.com/s/files/1/0429/9600/7065/files/84788179619.pdf
    • https://cdn.shopify.com/s/files/1/0446/0973/2771/files/swedenborg_libros.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xazijejizamoketabuguta.pdf
    • https://cdn.shopify.com/s/files/1/0433/7411/7015/files/dinulapikir.pdf
    • https://cdn.shopify.com/s/files/1/0436/5893/6473/files/zero_dark_thirty_subtitles.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dusegu.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_off00005dd6.bin
0ac2b36e3bcf83ea71593fa6960bb7acdeb68654b2f2e602fe7f175eae34a18c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD6 5260 bytes
font_01_sfnt_off00006f8b.bin
c4547921633903ee2888a0737242c909f0c8ca72385a0af3c3ef26271ecabee7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8B 12820 bytes

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