PDF malware analysis — malicious · a49b1376689f3741

MALICIOUS

PDF

42.3 KB Created: 2020-08-06 22:24:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ba87e6fa97763554e54cae98b625ef6d SHA-1: 8374cf977b7a7d0a9644a88605eb703ed98733b4 SHA-256: a49b1376689f37418bdab2968471ed969f0e6f4747b7b1777e043aeb55e57d9d

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a redirector service (ttraff.com) and a link farm hosted on Shopify. This suggests a phishing or malicious redirection attempt. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was heavily obfuscated, but the presence of numerous malicious links is a strong indicator of malicious intent.

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/pify?keyword=tous+les+analyses+du+sang+pdf
- http://files.smallenginerepairgalvestoncounty-santafe.com/uploads/1/3/2/6/132682976/xefolu.pdf
- http://files.whitestole.com/uploads/1/3/2/6/132683292/tufurodabu_ruwaw_vavavubowepi_fexibafom.pdf
- http://files.saintbrendans-online.com/uploads/1/3/1/4/131454286/xurixitiwo-morasidurexibo-dubedi.pdf
- https://cdn.shopify.com/s/files/1/0428/6991/5814/files/vefoxiwokeron.pdf
- https://cdn.shopify.com/s/files/1/0432/0926/1217/files/carnatic_violin_notes_for_malayalam_songs.pdf
- https://cdn.shopify.com/s/files/1/0428/7397/9043/files/shielded_metal_arc_welding_nptel.pdf
- https://cdn.shopify.com/s/files/1/0435/1744/4264/files/rugolipegun.pdf
- https://cdn.shopify.com/s/files/1/0427/6633/6167/files/ramulakuxoru.pdf
- https://cdn.shopify.com/s/files/1/0433/5442/3464/files/55358976583.pdf
- https://cdn.shopify.com/s/files/1/0431/6885/8280/files/kaxuwutusage.pdf
- https://cdn.shopify.com/s/files/1/0429/5606/2876/files/63983335946.pdf
- https://cdn.shopify.com/s/files/1/0430/6989/8903/files/15729531414.pdf
- https://cdn.shopify.com/s/files/1/0448/0489/8978/files/annotating_on_surface_pro.pdf
- https://cdn.shopify.com/s/files/1/0440/0365/5830/files/current_affairs_january_2020_affairs_cloud.pdf
- https://cdn.shopify.com/s/files/1/0433/8748/6358/files/jisoguvasu.pdf
- https://cdn.shopify.com/s/files/1/0436/4291/2926/files/pijivefobenevu.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_off000062fb.bin` `cf6fc845b27522394f5c87551c7492742504cb94e6821f935e4d7af188a37ac9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62FB	5164 bytes
`font_01_sfnt_off000074b2.bin` `f4249d1b60e13970d4d1cad04335ce424eeffea1fb23785301061e45a9a6b750`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x74B2	12092 bytes

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