PDF malware analysis — malicious · 3a586ddd9e5c5e99

MALICIOUS

PDF

47.1 KB Created: 2020-08-22 04:06:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: aed9ac3829456e8ac729f26c6646f3e2 SHA-1: 47e77072d7a80b8ac43abdf9ba366e69e91bf9f8 SHA-256: 3a586ddd9e5c5e999682778ea6fdeda2c77abf0099987ebf94889a6f65fd5c6f

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=graphing+quadratic+functions+standard+form+worksheet'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm or SEO poisoning tactic to obscure the malicious destination.

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=graphing+quadratic+functions+standard+form+worksheet
- http://files.gavrielrosenfeld.com/uploads/1/3/0/7/130775277/sobux-vivil.pdf
- http://files.redkinonline.com/uploads/1/3/0/7/130776167/9137584.pdf
- https://cdn.shopify.com/s/files/1/0428/7463/4403/files/cctv_camera_types.pdf
- https://cdn.shopify.com/s/files/1/0440/9776/5528/files/89012742027.pdf
- https://cdn.shopify.com/s/files/1/0434/7792/6040/files/cecil_textbook_of_medicine_26th_edition_download.pdf
- https://cdn.shopify.com/s/files/1/0428/2449/9367/files/nikoretapogifebiso.pdf
- https://cdn.shopify.com/s/files/1/0429/6117/4687/files/78560366928.pdf
- https://cdn.shopify.com/s/files/1/0447/7878/2869/files/pathogenesis_of_pneumonia.pdf
- https://cdn.shopify.com/s/files/1/0433/9875/8557/files/raboviladota.pdf
- https://cdn.shopify.com/s/files/1/0437/7260/8663/files/escherichia_coli_atcc_25922.pdf
- https://cdn.shopify.com/s/files/1/0433/7618/1404/files/les_adieux__la_reine_livre.pdf
- https://cdn.shopify.com/s/files/1/0428/0143/0695/files/29755983100.pdf
- https://cdn.shopify.com/s/files/1/0429/1392/3228/files/jogabijubironolebezoviku.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_off000061ed.bin` `1dca872700264f32c10838d30ba42967f13c73dd802039f110ef318fd3305b7e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61ED	5732 bytes
`font_01_sfnt_off0000754b.bin` `f927b839342e0790347e2c0f90ec9729a3344725bd23585ce32a52b85cfa7d84`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x754B	13696 bytes
`font_02_sfnt_off0000a153.bin` `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA153	4324 bytes

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