PDF malware analysis — malicious · 4e82c3f1b7e761a2

MALICIOUS

PDF

43.3 KB Created: 2020-08-08 23:56:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 05fa8b03c4ac0f10a98a7ec19cdb0328 SHA-1: 6a09f8e913c47717350b5cee50afd823833b2762 SHA-256: 4e82c3f1b7e761a27c8ee2a8e6e79cb94a79aef5f9ffa7a8f7c61c803caca6e8

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a deceptive title and numerous embedded links, with one identified as a malicious redirector. The heuristic firings indicate the PDF is designed to redirect users to malicious infrastructure, likely for further exploitation or phishing. The ML classifier strongly supports the malicious nature of this document.

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.ru/pify?keyword=comment+assembler+des+documents+pdf+en+un+seul
- http://files.abiwright.co.uk/uploads/1/3/0/7/130776037/nofovidowenuvuxaras.pdf
- http://jorufujoz.narakucostumes.com/uploads/1/3/1/4/131483281/9204606.pdf
- http://files.comeseescotland.com/uploads/1/3/1/8/131857213/kafamozovowe.pdf
- http://files.instriderunner.com/uploads/1/3/1/3/131380467/dd264c2.pdf
- https://cdn.shopify.com/s/files/1/0433/9000/9502/files/95436207014.pdf
- https://cdn.shopify.com/s/files/1/0430/4722/3458/files/zifabixexebeputapi.pdf
- https://cdn.shopify.com/s/files/1/0429/6422/2101/files/59968820953.pdf
- https://cdn.shopify.com/s/files/1/0439/4729/4875/files/werusosezimuteroxi.pdf
- https://cdn.shopify.com/s/files/1/0430/3162/5882/files/xotik.pdf
- https://cdn.shopify.com/s/files/1/0432/7673/0533/files/vidirikuvejel.pdf
- https://cdn.shopify.com/s/files/1/0430/2661/2378/files/equipment_of_arnis.pdf
- https://cdn.shopify.com/s/files/1/0434/7104/4770/files/73269291661.pdf
- https://cdn.shopify.com/s/files/1/0430/9087/0423/files/non_governmental_organisations.pdf
- https://cdn.shopify.com/s/files/1/0441/4645/8776/files/fijixojisavesogasiguza.pdf
- https://cdn.shopify.com/s/files/1/0433/8358/6977/files/77565491683.pdf
- https://cdn.shopify.com/s/files/1/0434/4925/4050/files/learn_excel.pdf
- https://cdn.shopify.com/s/files/1/0430/0183/9775/files/physics_books_for_neet.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_off00005c99.bin` `c192285ba58ceb602265e211666429ec3f7a1a308955be1f08cdd7dfb63f82dc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C99	5300 bytes
`font_01_sfnt_off00006e7b.bin` `919ebdc3367666fa6328efb90deca10ae58fd9220155870097af52c60a5a67eb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E7B	11232 bytes
`font_02_sfnt_off000091e4.bin` `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x91E4	4324 bytes

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