PDF malware analysis — malicious · f07712690605885f

MALICIOUS

PDF

44.9 KB Created: 2020-07-22 08:53:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8e7c8526ed6b358d92fc627c226f62e3 SHA-1: 6adfe47e67f0f8d674560c0a5eff41dc003c1352 SHA-256: f07712690605885fe803236dba691654abefa0c765717a22eb559027170f2a28

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is ttraff.ru, which is used in conjunction with keywords suggesting a lure for medical information. The document body, though heavily obfuscated, contains metadata indicating it was generated by wkhtmltopdf, a tool sometimes used to create malicious documents.

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/wb?keyword=umeclidinium%20davis%20pdf
- http://files.dsccstandish.org/uploads/1/3/0/7/130776001/1851537.pdf
- http://files.ourhauntedtravels.com/uploads/1/3/0/9/130968984/8332602.pdf
- http://files.sbworldtravel.com/uploads/1/3/1/4/131453241/5446667.pdf
- https://cdn.shopify.com/s/files/1/0433/9879/1322/files/36085544296.pdf
- https://cdn.shopify.com/s/files/1/0431/6646/6216/files/xaxifusoka.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45397061855.pdf
- https://cdn.shopify.com/s/files/1/0429/2762/0249/files/pekaziromuvi.pdf
- https://cdn.shopify.com/s/files/1/0436/9963/4328/files/lonumebiri.pdf
- https://nafevulaxa.files.wordpress.com/2020/07/nilibuxuroligabemenupelok.pdf
- https://gomepimus.files.wordpress.com/2020/06/tokofojetagid.pdf
- https://pawelulewo.files.wordpress.com/2020/06/97299099457.pdf
- https://kufakim.files.wordpress.com/2020/06/66156467232.pdf
- https://tavatolu.files.wordpress.com/2020/06/tixapitumirepabituva.pdf
- https://cdn.shopify.com/s/files/1/0428/9826/0124/files/figokiti.pdf
- https://cdn.shopify.com/s/files/1/0429/6137/1290/files/62733946189.pdf
- https://cdn.shopify.com/s/files/1/0437/4924/5082/files/xubol.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tosinumemelijigejidab.pdf
- https://cdn.shopify.com/s/files/1/0437/5596/2522/files/78246252351.pdf
- https://cdn.shopify.com/s/files/1/0428/8148/2919/files/rubuvofejudalavevigoxopuv.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53262414385.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/
- https://nafevulaxa.files.wordpress.com/2020/0

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000073b5.bin` `a0a91c653012b325c12b346bb00d4bd2c2658610ecca5ad5b43231a106c94096`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73B5	4948 bytes
`font_01_sfnt_off00008475.bin` `ebcf255acfda12ed581894927d0f6755021a0b96bbbd4e951ac8e6021c26aa17`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8475	9880 bytes

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