PDF malware analysis — malicious · 261cd5276e720f7b

MALICIOUS

PDF

39.6 KB Created: 2020-08-31 00:27:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a592b0a00edf52b2425a20359b28cb7b SHA-1: 898df7350a315b22d50252ac974b70876675f8b4 SHA-256: 261cd5276e720f7b9c21525c8e004883560c96eb6fc34caf69f0e3cfd6b40e6c

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'my hero academia op2'. The presence of a large number of external PDF links, many pointing to Shopify, suggests a link farm or SEO poisoning attempt to increase visibility. No scripts were extracted from this sample.

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/wix?keyword=my+hero+academia+op2
- https://cdn.shopify.com/s/files/1/0433/0032/3478/files/51452456174.pdf
- https://cdn.shopify.com/s/files/1/0434/3850/6146/files/69141591933.pdf
- https://cdn.shopify.com/s/files/1/0427/5827/5238/files/68111375004.pdf
- https://static.usrfiles.com/ugd/e4bc37_e765a43458f84893a975838045e94df1.pdf
- https://static.usrfiles.com/ugd/2f3ac6_34244a133b084256bbfbe6d7b7d06116.pdf
- https://static.usrfiles.com/ugd/f14cf6_4740acbcc45e408bb1e2d6c0b300f784.pdf
- https://static.usrfiles.com/ugd/b8c837_25e5364966a24a79aedad58f0850a1e0.pdf
- https://cdn.shopify.com/s/files/1/0433/2018/0894/files/11513334623.pdf
- https://cdn.shopify.com/s/files/1/0437/5419/3047/files/91812912011.pdf
- https://cdn.shopify.com/s/files/1/0427/6341/9815/files/35242541713.pdf
- https://static.usrfiles.com/ugd/b8c837_ab7a096ce89f4b098577212538215d70.pdf
- https://static.usrfiles.com/ugd/a64c8c_c91f4202f4f1458ab4d48cff47a970c1.pdf
- https://static.usrfiles.com/ugd/8cbfce_2fef79674a534160ae7c91d2bdb9806f.pdf
- https://static.usrfiles.com/ugd/510a18_f84651fc7f9b42a8b93e8501579993ea.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_off000050c3.bin` `fa1f799fecaf2718185621f193900adb0d591499a636ca09e92437e56dcf4173`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x50C3	4944 bytes
`font_01_sfnt_off00006195.bin` `d3dde51a27f0e5df76d74282cc4123b6ab0884e28604114f7527882763419637`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6195	10048 bytes
`font_02_sfnt_off00008401.bin` `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8401	4324 bytes

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