Malicious PDF — malware analysis report

Static analysis result for SHA-256 52a80d932591f7ac…

MALICIOUS

PDF

47.4 KB Created: 2020-08-07 04:41:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b33de0761674ce4371a4554a2e8a7e8a SHA-1: 3513a8ec5ca10db26da47d0956afdb8c7d97b35b SHA-256: 52a80d932591f7ac197ce7ee06096f4a66d557517c9eb66be4149e14641685fe
150 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, including a primary link to a known malicious redirector at `ttraff.com`. The document body text, though partially corrupted, suggests a lure related to 'dissertation on marketing pdf'. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating the document's purpose is to drive traffic to potentially harmful sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=dissertation%20on%20marketing%20pdf
    • http://files.cubandcuppy.com/uploads/1/3/2/6/132695829/a93690f1f9.pdf
    • http://files.denjac.com/uploads/1/3/1/6/131606111/gusevejab-gebowiwat-gumuvamonadejof-vokub.pdf
    • http://files.southwindkennels.com/uploads/1/3/0/7/130775084/vilen.pdf
    • http://files.quillenphysiciansehr.com/uploads/1/3/1/0/131070604/gunatusixefasun.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/38410449652.pdf
    • https://cdn.shopify.com/s/files/1/0430/8860/9429/files/vukepidiruwamopowixa.pdf
    • https://cdn.shopify.com/s/files/1/0436/8983/6697/files/99158061035.pdf
    • https://cdn.shopify.com/s/files/1/0432/7482/9987/files/63077474675.pdf
    • https://cdn.shopify.com/s/files/1/0430/6426/2818/files/witekuzolevowujavozaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/10809735118.pdf
    • https://cdn.shopify.com/s/files/1/0435/5712/6295/files/pesimemewi.pdf
    • https://cdn.shopify.com/s/files/1/0438/6642/3456/files/tosare.pdf
    • https://cdn.shopify.com/s/files/1/0435/1046/4667/files/91291532895.pdf
    • https://cdn.shopify.com/s/files/1/0434/6737/4758/files/17928322900.pdf
    • https://cdn.shopify.com/s/files/1/0431/5335/9005/files/radiestesia_clasica_y_cabalistica.pdf
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/43923676082.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_off00007c07.bin
4f4c54742bd16dea9e5d81be120ae3dd1a6012323f8e85f6fec81227342a9233		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C07 5392 bytes
font_01_sfnt_off00008e53.bin
22587f1a32a697c5faefa92ff7d665237c6acff2f9e42b7f4e5ebea7cedde5a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E53 10076 bytes

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