PDF malware analysis — malicious · 05b5abc213b8bdfa

MALICIOUS

PDF

40.3 KB Created: 2020-08-18 20:24:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8d30ed4a3488c9f261c4ab6af2f0a069 SHA-1: 6516d47279fa7e39d48df175077e8fe5a657eb72 SHA-256: 05b5abc213b8bdfad8b34214942c3f25670ae7c7e4a9b5237723766419fc2d8c

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, forming a link farm. One prominent link, https://ttraff.com/pify?keyword=ccleaner+apk+cracked, is flagged as malicious and likely serves as a redirector to further malicious content. The document body also contains obfuscated text and the malicious URL, suggesting an attempt to deceive users into clicking malicious links under the guise of downloading cracked software.

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.com/pify?keyword=ccleaner+apk+cracked
- http://files.realwomenrealjewelry.com/uploads/1/3/2/6/132681494/4834819.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0428/4982/9023/files/pinawijavena.pdf
- https://cdn.shopify.com/s/files/1/0433/4705/0661/files/vunovefoferofufeso.pdf
- https://cdn.shopify.com/s/files/1/0435/1731/3178/files/nexowuboti.pdf
- https://cdn.shopify.com/s/files/1/0429/3653/3151/files/fibumuxazapiv.pdf
- https://cdn.shopify.com/s/files/1/0439/1151/2232/files/pimoxelutarazaregajoso.pdf
- https://cdn.shopify.com/s/files/1/0433/9616/9886/files/36267106831.pdf
- https://cdn.shopify.com/s/files/1/0428/2908/6876/files/convex_optimization_by_boyd_and_vandenberghe.pdf
- https://cdn.shopify.com/s/files/1/0435/3651/5224/files/97523624523.pdf
- https://cdn.shopify.com/s/files/1/0438/4564/8546/files/18762685437.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_off000060af.bin` `f36fc71ea4a00bacd0999f3b9e82d879d8318756a114d4f0a2399a48007091e3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60AF	4860 bytes
`font_01_sfnt_off00007137.bin` `7235f0b73067361c2a203c1adef46e5ca5bd3a154017a4a6747939465364c6e0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7137	10588 bytes

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