PDF malware analysis — malicious · c57b04340945c555

MALICIOUS

PDF

47.0 KB Created: 2020-09-02 06:29:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: faa51b6b4753433ceb9616f36a716790 SHA-1: 560c590a98a68d77e6135e65d945b7d01c4df37a SHA-256: c57b04340945c555ec1ab9e4242e3eb492e48801c680e157d70cfc753365491e

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at 'https://ttraff.com/wix?keyword=sql+database+viewer'. The document body, though heavily obfuscated, also contains this URL and other benign-looking PDF links, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly indicates maliciousness, and the overall structure points to a social engineering lure to redirect users to malicious content.

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=sql+database+viewer
- https://cdn.shopify.com/s/files/1/0433/0923/6374/files/lg_6710v00091g_manual.pdf
- https://cdn.shopify.com/s/files/1/0433/4783/7083/files/rozutemanekem.pdf
- https://cdn.shopify.com/s/files/1/0433/7257/6922/files/83624649497.pdf
- https://cdn.shopify.com/s/files/1/0429/1916/6105/files/62319723036.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26965864763.pdf
- https://cdn.shopify.com/s/files/1/0431/0489/5143/files/20585680366.pdf
- https://cdn.shopify.com/s/files/1/0440/1466/5878/files/anaconda_1_full_movie_in_english.pdf
- https://cdn.shopify.com/s/files/1/0432/5238/3902/files/4829550895.pdf
- https://static.usrfiles.com/ugd/b27199_50d7f3ad54a84e768b2da6c8e7401bed.pdf
- https://static.usrfiles.com/ugd/6cabbb_3d2f0528622849ed92597135f6313f61.pdf
- https://static.usrfiles.com/ugd/dd4472_eb311fc2eafa459483b44dd1dc4b9948.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_off00007adb.bin` `cb4339afe1df1c9d93ef5bb7999f13e570a82d288d96b1cd9ea9c0bd9303f91f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7ADB	5340 bytes
`font_01_sfnt_off00008d1f.bin` `680bfb118435067dbdd82a8000de87a2e23ad57a496225c695d11f65c9e402bd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D1F	10144 bytes

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