PDF malware analysis — malicious · e44788f58f6dc10a

MALICIOUS

PDF

39.9 KB Created: 2020-08-03 08:09:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0e4af071331b53c53182aa32a8eee942 SHA-1: 25e7390218992412143c66418d2150f759bd6f6b SHA-256: e44788f58f6dc10aa3a75d6297c120f1600ae34246598c1bc553c80c092d881d

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious payload. The document body text and embedded links suggest a lure to trick users into visiting these URLs. The ML classifier strongly supports the malicious nature of this PDF.

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/pify?keyword=remove+ads+from+android
- http://files.fireweedcoffeeco.com/uploads/1/3/1/8/131871745/418903.pdf
- http://files.gotoheavendancecompany.com/uploads/1/3/2/7/132710497/xevewo.pdf
- http://files.tomdeprisco.com/uploads/1/3/0/7/130739524/9912399.pdf
- https://cdn.shopify.com/s/files/1/0428/2833/3219/files/35637235436.pdf
- https://cdn.shopify.com/s/files/1/0437/8607/6309/files/waropikulavejom.pdf
- https://cdn.shopify.com/s/files/1/0434/0498/4483/files/livixilufanugatadupolilew.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63912397784.pdf
- https://cdn.shopify.com/s/files/1/0433/0677/8777/files/dufejovupuxo.pdf
- https://cdn.shopify.com/s/files/1/0430/1737/1801/files/jenamajutejizo.pdf
- https://cdn.shopify.com/s/files/1/0431/7010/3452/files/98855057761.pdf
- https://cdn.shopify.com/s/files/1/0433/7369/1045/files/11379774889.pdf
- https://cdn.shopify.com/s/files/1/0432/7666/4998/files/emmett_legally_blonde.pdf
- https://cdn.shopify.com/s/files/1/0431/2599/7722/files/1001_albums_list.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_off00005f56.bin` `b08922e5bbb15b4212fa5d8e4e35cec5ba14865e0eafae1ebed8335dfb9cb05b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F56	5088 bytes
`font_01_sfnt_off0000709b.bin` `8f8acddb58f51dae1aefff6a7dd7b045f4e117b706e2bfc452ec4aa5b7b40262`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x709B	10160 bytes

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