PDF malware analysis — malicious · 8f87cb2ac20d7763

MALICIOUS

PDF

45.3 KB Created: 2020-08-12 09:31:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ac10cc9ef56a81e0fb6d3ba3b53a0509 SHA-1: 82bc4d770cfaf016b66375ce72465a8a09fab8fb SHA-256: 8f87cb2ac20d77637c0b6e6783c9a6e9a7fe6054ef19a6ff6411bd11e400d322

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary heuristic indicates that the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, suggesting a lure to a malicious site.

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.com/pify?keyword=how+to+make+a+paper+book+into+a+pdf
- http://files.finblooming.com/uploads/1/3/1/4/131407263/2453151.pdf
- http://files.mpwsr.com/uploads/1/3/1/4/131438202/lukiwetezanixozelo.pdf
- http://files.rebeccajaynephotography.com/uploads/1/3/1/1/131164252/2805746.pdf
- https://cdn.shopify.com/s/files/1/0428/9003/5366/files/vulirinoxizadaranitaj.pdf
- https://cdn.shopify.com/s/files/1/0431/0879/4525/files/satisfao_no_ambiente_de_trabalho.pdf
- https://cdn.shopify.com/s/files/1/0440/7122/3446/files/specific_carbohydrate_diet_list.pdf
- https://cdn.shopify.com/s/files/1/0428/3337/9487/files/tafovezemulive.pdf
- https://cdn.shopify.com/s/files/1/0429/2778/4099/files/95073489983.pdf
- https://cdn.shopify.com/s/files/1/0431/7508/4193/files/76001078180.pdf
- https://cdn.shopify.com/s/files/1/0428/3842/5767/files/kimimonunilumeji.pdf
- https://cdn.shopify.com/s/files/1/0430/8339/9321/files/24939459125.pdf
- https://cdn.shopify.com/s/files/1/0433/8778/1276/files/ropulebelusavazawanulasoj.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/koxumugude.pdf
- https://cdn.shopify.com/s/files/1/0448/2033/2705/files/ppct_training_manual.pdf
- https://cdn.shopify.com/s/files/1/0431/4624/8358/files/xulugavuna.pdf
- https://cdn.shopify.com/s/files/1/0430/7596/0985/files/zegiti.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006749.bin` `d0d68f2cc91278f4c6a0ba2c71e65c9149556d273707267f379b6ca94cd88bb9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6749	5020 bytes
`font_01_sfnt_off00007844.bin` `99e077c88b79eb801215e2430d2899bbbb087c548499f39af71badbbb078139b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7844	9916 bytes
`font_02_sfnt_off00009a24.bin` `7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9A24	4324 bytes

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