PDF malware analysis — malicious · 77e16ae2522c0272

MALICIOUS

PDF

38.3 KB Created: 2020-08-31 12:44:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 97e93a4eca1e91b0e49b4562cd0838d8 SHA-1: 2f024abb2ce36abeacbecda245193bb735b02270 SHA-256: 77e16ae2522c0272523d1588c23924d68458ab52f580195c373e6f9e6a91bfaf

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, which is likely intended to lead the user to a malicious site or download. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the presence of the URL strongly indicate this malicious intent. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as a lure.

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.cc/wix?keyword=cinema+4d+indir+gezginler
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_a91bbc8fbeca4c888860e15f476d2463.pdf
- https://static.usrfiles.com/ugd/b8c837_9b7fd98a56984821900bff5466b75b4a.pdf
- https://static.usrfiles.com/ugd/b8c837_786234e29bcb4c4b8140c880d286c860.pdf
- https://cdn.shopify.com/s/files/1/0462/5081/9733/files/intex_18_x_48_ultra_frame_pool_instructions.pdf
- https://cdn.shopify.com/s/files/1/0434/3024/8600/files/96946210026.pdf
- https://cdn.shopify.com/s/files/1/0431/2452/3169/files/97737203869.pdf
- https://static.usrfiles.com/ugd/8cbfce_24280ce3c14d43ac88a5ec9974feb3d2.pdf
- https://static.usrfiles.com/ugd/1decf9_0637313dbdd1495c90ab1a9eca3fea2e.pdf
- https://static.usrfiles.com/ugd/739437_a298890a82a748f68c4af11113cc144d.pdf
- https://static.usrfiles.com/ugd/a771bd_0061e406d9264b08b00d7d684e42aa7f.pdf
- https://static.usrfiles.com/ugd/07ef24_f700faa706a945f6a184de8354890037.pdf
- https://static.usrfiles.com/ugd/cf79db_78d922c34f97489899bc0d5305bb32aa.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_off00005707.bin` `cbdc3ef70fc38928b22071367482162c7ddaedae8e5f9be78c46a35ad5fd15eb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5707	5008 bytes
`font_01_sfnt_off000067fd.bin` `c76d1808b7f35a716777e012c3e790b307ad725ff00278c708a7ea3ef10cbf1b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67FD	11260 bytes

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