PDF malware analysis — malicious · 2fac3e94262e5536

MALICIOUS

PDF

57.1 KB Created: 2020-08-30 03:39:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 162ac683ab5010bfecb48071f03180c5 SHA-1: 306c76b6c6ef8329f98f10b7ec8c052cdbe640a5 SHA-256: 2fac3e94262e553650747a8247868d64003eda114dda9d9b737fc43e2f24f0ce

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, including a critical redirector link to 'https://ttraff.link/wix?keyword=rocky+and+mugsy+bugs+bunny'. This indicates a phishing or scam attempt designed to redirect users to malicious infrastructure. 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.link/wix?keyword=rocky+and+mugsy+bugs+bunny
- https://static.usrfiles.com/ugd/b8c837_607fbfb1d5f645238b825f8f09e0339f.pdf
- https://static.usrfiles.com/ugd/b8c837_b15ff1597ced4d0a91716829bbe41895.pdf
- https://static.usrfiles.com/ugd/b8c837_6e47c7c7d1a6442d8ebdcdc9369fa4d1.pdf
- https://cdn.shopify.com/s/files/1/0427/7541/2902/files/fufud.pdf
- https://cdn.shopify.com/s/files/1/0433/8620/8406/files/82078035320.pdf
- https://cdn.shopify.com/s/files/1/0433/2329/3864/files/31814499994.pdf
- https://static.usrfiles.com/ugd/a44510_8ec023b191404144bb8dec002afcbbff.pdf
- https://static.usrfiles.com/ugd/a2d007_6cc98b92ae8941b8b72f2d45c73a9e4d.pdf
- https://static.usrfiles.com/ugd/93c935_1117409f7ce94de68d2bd7d9a1d6b010.pdf
- https://static.usrfiles.com/ugd/b8c837_b5d72d8fb86b42059382dd488905e9a3.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97046042130.pdf
- https://cdn.shopify.com/s/files/1/0431/3897/3857/files/46807401387.pdf
- https://cdn.shopify.com/s/files/1/0427/5725/9420/files/appendicitis_complications.pdf
- https://cdn.shopify.com/s/files/1/0431/8802/7556/files/53498668975.pdf
- https://cdn.shopify.com/s/files/1/0433/4416/7064/files/chop_suey_midi.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_off0000a0ab.bin` `5c6f53b98b6d17e5bec2993adaa8fb9e4610305dd7f3a67d522cf93dee4a2b3f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA0AB	5444 bytes
`font_01_sfnt_off0000b327.bin` `8f7cddafef16cd061139bf4c63675aabec4c2fb896b38b6f88b4b7ef2781c849`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB327	10820 bytes

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