PDF malware analysis — malicious · c9697fd4e81e1c44

MALICIOUS

PDF

40.8 KB Created: 2020-08-02 14:17:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 84871e042610af9c1272635816ed72bc SHA-1: 5764d61fa60fe7b4c522fd0fdcdd6feb78f8614b SHA-256: c9697fd4e81e1c4455b0ae49f27b4558bc17d75df65de075177c7c66102c3a00

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, contains the text 'Intermediate algebra sullivan 2nd edition pdf' and a URL that matches the redirector, suggesting a lure for users seeking academic material. The redirector URL is https://ttraff.cc/pify?keyword=intermediate+algebra+sullivan+2nd+edition+pdf, 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=intermediate+algebra+sullivan+2nd+edition+pdf
- http://files.nav-gill.com/uploads/1/3/1/0/131069968/b35919c.pdf
- http://files.globalafricadiaspora.org/uploads/1/3/1/4/131454219/3710953.pdf
- http://files.schmidtenglish.com/uploads/1/3/0/8/130874613/1222738.pdf
- http://files.eccevideos.com/uploads/1/3/1/4/131406629/ditapuxisesas_pesixawipe_gubemibefu.pdf
- https://cdn.shopify.com/s/files/1/0428/2885/7503/files/nafazepesotutapajov.pdf
- https://cdn.shopify.com/s/files/1/0430/4610/9341/files/96368521916.pdf
- https://cdn.shopify.com/s/files/1/0437/9371/1265/files/25921200743.pdf
- https://cdn.shopify.com/s/files/1/0431/7341/3032/files/ranudanakozetoxitiduwinew.pdf
- https://cdn.shopify.com/s/files/1/0431/1970/6279/files/45715633162.pdf
- https://cdn.shopify.com/s/files/1/0434/0521/3847/files/muvamememeletomub.pdf
- https://cdn.shopify.com/s/files/1/0428/9229/6359/files/lozagazanarid.pdf
- https://cdn.shopify.com/s/files/1/0431/3215/8116/files/jomamak.pdf
- https://cdn.shopify.com/s/files/1/0436/7450/1273/files/banone.pdf
- https://cdn.shopify.com/s/files/1/0432/2754/5763/files/94154855799.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefopevepal.pdf
- https://cdn.shopify.com/s/files/1/0435/8150/5695/files/pukewuxowanufozi.pdf
- https://cdn.shopify.com/s/files/1/0428/6801/5260/files/12448035328.pdf
- https://cdn.shopify.com/s/files/1/0429/1064/6435/files/85679946141.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000055da.bin` `50e8dc37fe25d161e682ca281a189e9d9e13e1d3e5fbef72c6bc1d2d8bd34345`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x55DA	5632 bytes
`font_01_sfnt_off000068f1.bin` `b13643669b39024a1dc157aec6dd68442ac93b6f3f2992cb32bf8b1fa5e530bc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68F1	13368 bytes

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