PDF malware analysis — malicious · 966a4456488c5239

MALICIOUS

PDF

47.9 KB Created: 2020-07-31 14:01:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4631ac09ea12e1146f4fa6f608d91e21 SHA-1: f0c366f4fdf7713a4d9e243fc95924e0b031587d SHA-256: 966a4456488c523931b4d5d319883b4388f55b6c68b1e7f6655b7564e2f277a4

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious due to a high density of embedded external links. The heuristic PDF_SEO_LINK_FARM indicates a link farm, and PDF_MALICIOUS_REDIRECTOR_LINK points to a suspicious redirector URL. The document body appears to be corrupted or heavily obfuscated, providing no clear user-facing content, but the presence of numerous links suggests a traffic-driving or SEO-spamming campaign.

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=auxiliaries+and+modals+pdf
- http://files.kristamaysart.com/uploads/1/3/1/0/131070485/xaxevijuvumoben_vevagisupa_zolugikunuwak.pdf
- http://files.mcoemathletics.org/uploads/1/3/1/4/131454316/9566502.pdf
- http://files.danoboots.com/uploads/1/3/1/6/131637419/jikexumexu.pdf
- http://files.seriesoflight.com/uploads/1/3/2/8/132814138/tanowalusotafilal.pdf
- http://files.kristamaysart.com/uploads/1/3/1/0/131070485/xaxevijuvumoben_
- https://cdn.shopify.com/s/files/1/0440/8786/9592/files/bolosebupi.pdf
- https://cdn.shopify.com/s/files/1/0434/1337/3084/files/71794701738.pdf
- https://cdn.shopify.com/s/files/1/0429/7143/1065/files/82771497448.pdf
- https://cdn.shopify.com/s/files/1/0433/1572/4456/files/jakid.pdf
- https://cdn.shopify.com/s/files/1/0430/8343/2096/files/mumevumujenisokab.pdf
- https://cdn.shopify.com/s/files/1/0428/9291/8937/files/jewogoramibitazutunokome.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lasuzopaxikabade.pdf
- https://cdn.shopify.com/s/files/1/0432/6028/0982/files/jaxuperawivod.pdf
- https://cdn.shopify.com/s/files/1/0434/4227/4471/files/kipovibetelaxadugawepojon.pdf
- https://cdn.shopify.com/s/files/1/0430/5344/9365/files/74428095234.pdf
- https://cdn.shopify.com/s/files/1/0429/2270/5055/files/88197058127.pdf
- https://cdn.shopify.com/s/files/1/0434/5361/2182/files/75433383775.pdf
- https://cdn.shopify.com/s/files/1/0430/8343/2096/files/faxazapolib.pdf
- https://cdn.shopify.com/s/files/1/0429/4947/6518/files/pubitezozevesure.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_off00007ff0.bin` `ad2672a808fb839bab03c30f9788a3e953d1b7c02d2819708989559ba4887457`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7FF0	5044 bytes
`font_01_sfnt_off000090f1.bin` `99a0e8abc1e97a6e5cc7965d63fba0a6e577edd96396123c6361540041a3eed3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x90F1	9680 bytes

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