Malicious PDF — malware analysis report

Static analysis result for SHA-256 899d46c4bc917584…

MALICIOUS

PDF

41.1 KB Created: 2020-07-20 23:20:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6085ac66de467f28817ce1fd8b5bcaef SHA-1: 794d6d0a3b721ce471233e8d234d7e25a33e5f3c SHA-256: 899d46c4bc917584b528e978c97a2ee6da2283ebfccd9e3f60a8b8e2b3cba134
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, indicating an attempt to lead the user to a harmful site. The 'PDF_SEO_LINK_FARM' heuristic suggests a large number of outbound links, likely to obscure the malicious destination or for SEO manipulation. No scripts were extracted, but the presence of malicious links is sufficient to classify the attack pattern.

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/wb?keyword=maquina%20de%20coser%20manual%20costa%20rica
    • http://files.mcveyoutdoors.com/uploads/1/3/2/6/132695994/5594059.pdf
    • http://files.growyourteaching.com/uploads/1/3/0/7/130775341/deburew.pdf
    • http://files.nationalhoteltoowoomba.com/uploads/1/3/0/7/130775396/3254230.pdf
    • http://files.rodrigoforhire.com/uploads/1/3/0/7/130775677/dilefevikawugiginu.pdf
    • http://files.rodrigoforhire.com/uploads/1/3/0/7/130775677/dilefevik
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32829552166.pdf
    • https://cdn.shopify.com/s/files/1/0432/4861/5579/files/naxifawidokonoxurenuvimom.pdf
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/sinap.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/59526866216.pdf
    • https://nobivewix214068776.files.wordpress.com/2020/06/vogevomolevevuzagaxetamel.pdf
    • https://nebotibubir.files.wordpress.com/2020/06/81360102334.pdf
    • https://bizesipu.files.wordpress.com/2020/06/voride.pdf
    • https://sosabufuji.files.wordpress.com/2020/06/selobedizadunifamumufon.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/tonipubojakak.pdf
    • https://cdn.shopify.com/s/files/1/0434/1386/4602/files/49537681928.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/27641644708.pdf
    • https://cdn.shopify.com/s/files/1/0436/8406/9526/files/lirifepavodes.pdf
    • https://cdn.shopify.com/s/files/1/0435/0954/7174/files/wuvujinez.pdf
    • https://cdn.shopify.com/s/files/1/0431/1030/1847/files/75333422400.pdf
    • https://cdn.shopify.com/s/files/1/0431/7983/5547/files/xuwowaxita.pdf
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/11228316064.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_off000060de.bin
1970907820b868bff640983e6b9055851f71bb87d5fb228b510ce9ddeb4dd376
pdf-font-stream PDF embedded font (sfnt) at offset 0x60DE 5096 bytes
font_01_sfnt_off0000720c.bin
5b9279e2f2a1b7a96aeaa3a407aa15c716d6d915d97517ed4bbade39846fa9b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x720C 10752 bytes