PDF malware analysis — malicious · d5e00b84f82b1391

MALICIOUS

PDF

58.6 KB Created: 2020-08-21 01:57:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a4ce7a48a7edfd7f214febfbfcb43a7c SHA-1: f4f409ae0bd8ed2fd1d0c9c0502227a2ccc74e97 SHA-256: d5e00b84f82b1391da836ad0adfd92a9e70edbf9e44cb852db447fbe2ec94a91

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains text related to academic answers, suggesting a lure to trick users into clicking the malicious link. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for the malicious content.

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=leckie+leckie+national+5+physics+answers
- http://files.unityminorhockey.com/uploads/1/3/2/3/132302939/finafekap.pdf
- http://files.mauidreamer.com/uploads/1/3/1/4/131437680/xekebasevoteb.pdf
- http://wedujo.ashleighlleiter.com/uploads/1/3/1/3/131398243/dupigudemusa.pdf
- https://cdn.shopify.com/s/files/1/0428/2191/0687/files/98721508949.pdf
- https://cdn.shopify.com/s/files/1/0427/3248/6823/files/stephanie_meyer_twilight.pdf
- https://cdn.shopify.com/s/files/1/0434/3640/8982/files/jawanisosenibu.pdf
- https://cdn.shopify.com/s/files/1/0428/6464/0159/files/29961360770.pdf
- https://cdn.shopify.com/s/files/1/0434/3595/0241/files/68997471028.pdf
- https://cdn.shopify.com/s/files/1/0433/6248/4383/files/lista_de_alimentos_con_carbohidratos.pdf
- https://cdn.shopify.com/s/files/1/0430/6268/9946/files/waziwoxudapudojujuwedet.pdf
- https://cdn.shopify.com/s/files/1/0433/9345/0134/files/paxixef.pdf
- https://cdn.shopify.com/s/files/1/0431/1236/6229/files/rolomobukekogab.pdf
- https://cdn.shopify.com/s/files/1/0431/9055/0679/files/cours_sur_l_amnagement_du_territoire.pdf
- https://cdn.shopify.com/s/files/1/0441/4029/8392/files/attahiyat_full_malayalam.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_off000099be.bin` `aab45a18acb7de273c38ddb4d4b69e39babd4d3d090a3bdc7941dfb91c6743f0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x99BE	5132 bytes
`font_01_sfnt_off0000ab32.bin` `90fa7e65c79262b721852bc211242b53e6027f0456cc46b2b676cbb7d8b125e8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAB32	10532 bytes
`font_02_sfnt_off0000cf3b.bin` `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCF3B	4324 bytes

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