PDF malware analysis — malicious · ab48886bbaad9720

MALICIOUS

PDF

52.6 KB Created: 2020-08-30 10:56:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ce1f61993a652057bb5f936280669674 SHA-1: dd00014144bbdeef851c7a558fb71519fa60c8b4 SHA-256: ab48886bbaad97206380d311cdaed2d9712b744eca6e34fa5d1473dbcce9db19

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The presence of numerous external PDF links, many pointing to 'static.usrfiles.com', suggests a link farm or SEO poisoning tactic to increase visibility and traffic to the malicious redirector.

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=futbol+kitaplar%25C4%25B1+pdf
- https://static.usrfiles.com/ugd/54fa57_6496e34dea9f41ff8ae8f7e5b59eac45.pdf
- https://static.usrfiles.com/ugd/b8c837_682d915c828e49ccae42f5eabca10abc.pdf
- https://static.usrfiles.com/ugd/271e65_715a512064d04788bb97e0211ab025a2.pdf
- https://static.usrfiles.com/ugd/69b86f_c400f650ee4441a3b86df4e43c769aa4.pdf
- https://cdn.shopify.com/s/files/1/0432/2780/7911/files/bonded_child_labour.pdf
- https://cdn.shopify.com/s/files/1/0439/6145/0654/files/business_intelligence_architecture.pdf
- https://cdn.shopify.com/s/files/1/0433/2368/7067/files/xuwalotilidetez.pdf
- https://static.usrfiles.com/ugd/a58b01_fc28fa405c634df29f9d1f8df65f4d09.pdf
- https://static.usrfiles.com/ugd/18f527_10aef347b3ea4346bdf2bbc1372822b4.pdf
- https://static.usrfiles.com/ugd/b8c837_bf257bcf4967410988f926d4b61bbb70.pdf
- https://static.usrfiles.com/ugd/b8c837_28c6af17d4ba43b6a144aaa7ea1ae9a4.pdf
- https://static.usrfiles.com/ugd/b8c837_bc75df98817d440eaba87af0d092cd52.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000843f.bin` `84a106442da43e374a2fca001ee504b7d056809039d3ff1d7367c90c4b3f6a6e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x843F	5048 bytes
`font_01_sfnt_off00009577.bin` `d5b70fd6c3b4b4b13ab036c9427fe7826797db2c062d34b6ba8c75787c9f4533`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9577	15948 bytes

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