PDF malware analysis — malicious · a88704eba2e15c19

MALICIOUS

PDF

53.8 KB Created: 2020-08-12 02:10:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8f841be59be3e5a0f9500df48bc5c497 SHA-1: f170363e6d3a018475dedb3ff81df1e96bc0b681 SHA-256: a88704eba2e15c19a3e572c1225083f87e4e48b5fea62291f18ebbce7c00564f

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a link that redirects to a malicious URL, disguised with a keyword relevant to job applications. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the link leads to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates the document is part of a larger link farm, likely for SEO manipulation or to distribute malicious content. The embedded URL is part of this redirection scheme.

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=application+letter+for+teaching+vacancy+pdf
- http://files.photoscopestudios.com/uploads/1/3/2/7/132740536/f21d525e3.pdf
- http://files.christlutheransoldotna.org/uploads/1/3/1/4/131453456/fulukunosubuwe.pdf
- http://dosulu.strawberrymooncounselling.com/uploads/1/3/0/8/130814328/mojaxavijiwavi.pdf
- https://cdn.shopify.com/s/files/1/0437/6992/1688/files/ravobud.pdf
- https://cdn.shopify.com/s/files/1/0438/7235/4459/files/20990036111.pdf
- https://cdn.shopify.com/s/files/1/0434/2566/1095/files/nifenajize.pdf
- https://cdn.shopify.com/s/files/1/0428/2161/5775/files/vekekowepirumowesitesej.pdf
- https://cdn.shopify.com/s/files/1/0431/0587/8170/files/belisako.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tufajotojitumawudawemir.pdf
- https://cdn.shopify.com/s/files/1/0428/4222/6854/files/46070592211.pdf
- https://cdn.shopify.com/s/files/1/0431/7095/5424/files/bavinck_our_reasonable_faith.pdf
- https://cdn.shopify.com/s/files/1/0440/5687/1062/files/48103276918.pdf
- https://cdn.shopify.com/s/files/1/0437/1241/3851/files/42797001714.pdf
- https://cdn.shopify.com/s/files/1/0431/7764/0092/files/29342251062.pdf
- https://cdn.shopify.com/s/files/1/0440/4497/6278/files/gezokagunojanorisesug.pdf
- https://cdn.shopify.com/s/files/1/0430/6278/8245/files/68740923403.pdf
- https://cdn.shopify.com/s/files/1/0433/4610/0374/files/types_of_public_policy_models.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_off00009474.bin` `33c5bdc6a8d829528ba98efc653763f4b0c8875d430fea25f98f574a1a1dd45f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9474	5388 bytes
`font_01_sfnt_off0000a6c5.bin` `02347de9b12a5af86fd1de979429da2514a4a8242c5a787766ed7ee07901c2cc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA6C5	10192 bytes

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