PDF malware analysis — malicious · 7e07025581e0f7f7

MALICIOUS

PDF

36.1 KB Created: 2020-08-31 16:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 67408dbcf5da82d42d7855b3bfd009db SHA-1: a9cb79a4caaa500cb92a273874ba9c55cd36300c SHA-256: 7e07025581e0f7f740521e80754e1f942bd4cf3e00b2848bd5d928e269987fa7

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, also contains the same malicious URL and appears to be a lure for users interested in 'index tab dividers'. The presence of a link farm suggests an attempt to distribute malicious content or redirect users to phishing or malware sites.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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/pify?keyword=index+tab+dividers+for+sheet+protectors
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0434/5485/7369/files/55203768866.pdf
- https://cdn.shopify.com/s/files/1/0432/2584/1819/files/73898562807.pdf
- https://cdn.shopify.com/s/files/1/0433/7526/3898/files/blog_template_microsoft_word.pdf
- https://cdn.shopify.com/s/files/1/0432/8243/2160/files/bangalore_bmtc_bus_route_number_and_destination.pdf
- https://cdn.shopify.com/s/files/1/0432/8184/2341/files/rolegopoj.pdf
- https://cdn.shopify.com/s/files/1/0431/4074/3329/files/kexekorinatewodil.pdf
- https://cdn.shopify.com/s/files/1/0428/8725/0087/files/18248176511.pdf
- https://cdn.shopify.com/s/files/1/0428/6890/0006/files/84306296606.pdf
- https://cdn.shopify.com/s/files/1/0436/8151/3625/files/53595153235.pdf
- https://cdn.shopify.com/s/files/1/0430/3273/9989/files/mewakebipe.pdf
- https://cdn.shopify.com/s/files/1/0433/1126/7990/files/dokerixogiroxezex.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004e38.bin` `695c179a93280f8c100a298050b0340cb9be2f747a7865dacd5f70f455ce6a0b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4E38	5416 bytes
`font_01_sfnt_off000060a4.bin` `5ffdc99b931ad7d635e479cdd9470316e6ac4457ef2cc57e1335d6c4730fe387`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60A4	10316 bytes

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