PDF malware analysis — malicious · 3afa1f4b7379c851

MALICIOUS

PDF

50.6 KB Created: 2020-08-31 00:51:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ac53aee54899a89d28294f6c9f2ac27c SHA-1: 157d766d2b009fd6f84c474b76efb72809495357 SHA-256: 3afa1f4b7379c8517995eb3557d4354388446b79b96861645577bb2a47cb5f9c

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as educational content. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates the primary URL, https://ttraff.cc/wix?keyword=arduino+for+kids+pdf, leads to malicious infrastructure. The PDF also contains a large number of links to other PDFs, likely for SEO manipulation to improve the ranking of the malicious link. No scripts were extracted from this sample.

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.cc/wix?keyword=arduino+for+kids+pdf
- https://cdn.shopify.com/s/files/1/0430/7720/6165/files/mississippi_state_abbreviation.pdf
- https://cdn.shopify.com/s/files/1/0431/9041/9620/files/bibijerox.pdf
- https://cdn.shopify.com/s/files/1/0432/8564/3419/files/isbd_guidelines_bipolar.pdf
- https://cdn.shopify.com/s/files/1/0451/0472/6168/files/lady_chatterley_s_lover_2015_movie.pdf
- https://static.usrfiles.com/ugd/09c3c7_ef591b85ecca40d08fbe26f4196e5cda.pdf
- https://static.usrfiles.com/ugd/a6e5e9_28efb1ad2cbf41939bc4424eda23064e.pdf
- https://static.usrfiles.com/ugd/c618e9_3c1fb185b0294a749f8a1e1ed17d0028.pdf
- https://static.usrfiles.com/ugd/e5a943_b2bc6f1b5c8c4fbb9df62a557d27e8bd.pdf
- https://static.usrfiles.com/ugd/b8c837_27a585d233e94e27a2dc28e0bd69e478.pdf
- https://static.usrfiles.com/ugd/de3d83_7fbb097f4d3443ae9e31e3972ceb19b8.pdf
- https://static.usrfiles.com/ugd/6908d7_cb90aadaa89f45a584ffebe224d01ff1.pdf
- https://cdn.shopify.com/s/files/1/0431/3333/7768/files/gs_ghatna_chakra_in_english.pdf
- https://cdn.shopify.com/s/files/1/0430/9378/6791/files/21445422629.pdf
- https://cdn.shopify.com/s/files/1/0430/5308/8919/files/affairs_cloud_current_affairs_august.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007337.bin` `966337882b4a91b0cabf4364c4cd3d006bfcab7d23d6f905d0aa93eb1ba0405c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7337	4528 bytes
`font_01_sfnt_off00008293.bin` `51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8293	1800 bytes
`font_02_sfnt_off00008b21.bin` `95597b137455ad4e1f164424a43f4a0b8390085acb3fed1b4fbfa3ed8dc3f748`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B21	10516 bytes
`font_03_sfnt_off0000aea1.bin` `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAEA1	4324 bytes

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