PDF malware analysis — malicious · 3d960e3cb8122257

MALICIOUS

PDF

48.4 KB Created: 2020-08-01 09:44:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c35532e4c90c9cb4c3d04516c9db3bf9 SHA-1: 67372aec574d851dfa9ba0a84b12394c98c5a44f SHA-256: 3d960e3cb8122257a1d68bc4987e5b01a7b6a64bc3192075b9f8e5c842afad76

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which likely leads to a phishing or malware delivery site. The document body contains garbled text but also includes the primary malicious URL and several other PDF links, reinforcing the link farm and redirection attack pattern.

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.cc/pify?keyword=navi-+x+for+kodi
- http://files.udrec.com/uploads/1/3/1/4/131482916/3256247.pdf
- http://files.authorseanmacuisdin.com/uploads/1/3/0/7/130740521/batemede_vidugerekon_gudoli.pdf
- http://files.rehobothconcertband.org/uploads/1/3/0/7/130775309/zireju.pdf
- http://files.learningforlittlepeoplepreschool.com/uploads/1/3/1/6/131606392/eb08ac245ae3ac.pdf
- https://cdn.shopify.com/s/files/1/0429/1103/9655/files/xujijigajofuvilakures.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67641838088.pdf
- https://cdn.shopify.com/s/files/1/0436/3943/9510/files/68631003626.pdf
- https://cdn.shopify.com/s/files/1/0432/4134/1092/files/pabozibajol.pdf
- https://cdn.shopify.com/s/files/1/0428/8187/6131/files/gezelepebodamugofaza.pdf
- https://cdn.shopify.com/s/files/1/0434/3706/4344/files/xazugufagibefido.pdf
- https://cdn.shopify.com/s/files/1/0431/6410/6908/files/53383253308.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99839510681.pdf
- https://cdn.shopify.com/s/files/1/0433/5799/5160/files/jutefaloxokijefavomimel.pdf
- https://cdn.shopify.com/s/files/1/0437/5596/2522/files/63929326116.pdf
- https://cdn.shopify.com/s/files/1/0435/5502/9141/files/vutuxanibamovexo.pdf
- https://cdn.shopify.com/s/files/1/0428/9436/0743/files/23210411968.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_off00007548.bin` `1af03f56276b06083a5f412f630ce7a9779786012b23a69f73873a60c8cd9403`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7548	4368 bytes
`font_01_sfnt_off00008436.bin` `a6e9bd4af2cebb9f268123201a9dc88e8cf6bde0eb6d1007280ea219190971c9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8436	10204 bytes
`font_02_sfnt_off0000a70d.bin` `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA70D	4324 bytes

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