PDF malware analysis — malicious · 06e876e7698e1ece

MALICIOUS

PDF

51.2 KB Created: 2020-08-30 00:47:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: d57e3311e435e3de5c4e9f6772d8d757 SHA-1: 36b5613b3e1310b50cee2cbf3a0c7afbdc7f6ef8 SHA-256: 06e876e7698e1ecebfabae7f5b4f4bb373560db038f4374973d1291e93e8366a

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Toastmasters advanced manuals' to encourage users to click the malicious link. The ML classifier also strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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/wix?keyword=toastmasters+advanced+manuals
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/8cbfce_dc96ea1127dd4cc7944d7967673cd80a.pdf
- https://static.usrfiles.com/ugd/b8c837_423da957b24945749e3364e832b5d02a.pdf
- https://static.usrfiles.com/ugd/b7ed05_56aa2be95cc942418fdd59a1f42788a1.pdf
- https://static.usrfiles.com/ugd/0049ca_8575dc9851304050976f72daafd6acd7.pdf
- https://static.usrfiles.com/ugd/b8c837_d5708ec81aa04e80abf8143ce2ac87a4.pdf
- https://cdn.shopify.com/s/files/1/0428/9550/7615/files/solicitud_de_autorizacin_de_uso_de.pdf
- https://cdn.shopify.com/s/files/1/0431/8052/3681/files/91123971024.pdf
- https://cdn.shopify.com/s/files/1/0433/8617/5651/files/postpartum_psychiatric_disorders.pdf
- https://cdn.shopify.com/s/files/1/0440/2728/1558/files/sidepibarijexeluzekibawik.pdf
- https://static.usrfiles.com/ugd/b8c837_7b45f645a8f446e1a05ee991c4a83db5.pdf
- https://static.usrfiles.com/ugd/b8c837_04b0933842df460fb8c32da42da8c17f.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00008b7d.bin` `49a0648aedd321354a10225d520ad6bc1c073e1a89034dcc695e3e4efc06d12f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B7D	5096 bytes
`font_01_sfnt_off00009cbd.bin` `b4db62024aacae0a7ec28d76e6cd38616bc4959ba2e30dacc5aebbde04feb6f7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9CBD	10420 bytes

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