PDF malware analysis — malicious · 7eccb8fe342d949d

MALICIOUS

PDF

38.5 KB Created: 2020-05-17 15:18:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 2739a6ab293bf121287b88934359a6a4 SHA-1: 30262c2ee75dd8a1e181e0b511234e841c517578 SHA-256: 7eccb8fe342d949d0806f85f12e4fed228445c159cb44aa84b77d0fea7ef5f04

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML classifier also strongly indicated maliciousness. The document body contains text related to 'banner enrollment reports' and is generated by wkhtmltopdf, suggesting a potential lure or spamming operation. The primary attack pattern involves redirecting users to a vast network of linked PDF files.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

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.
External URI info PDF_URI

PDF contains an external URL action
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 http://collectivedreamllc.com/uploads/1/3/0/8/130874433/130874433.html#banner+enrollment+reports
- http://the-mystery-box-2.com/uploads/1/3/1/3/131380942/f8fc4.pdf
- http://ajacf.com/uploads/1/3/1/4/131454420/mepitoruxapajopudit.pdf
- http://leasemyrv.com/uploads/1/3/0/6/130621490/fesufuzedudexa.pdf
- http://epiclivinglifecoaching.com/uploads/1/3/1/4/131406687/5237443.pdf
- http://alluringoccasionsbybianca.com/uploads/1/3/1/3/131383975/gexuvo.pdf
- http://hannahbwellness.com/uploads/1/3/0/8/130814250/linisudod.pdf
- http://wasbc.net/uploads/1/3/0/6/130622036/wagavefope.pdf
- http://ernestmodarelli.net/uploads/1/3/1/4/131407630/safasugajefodawirali.pdf
- http://outex.lv/uploads/1/3/0/7/130739087/rabiloxekopubiwu.pdf
- http://karlamhughes.com/uploads/1/3/0/5/130545698/1404165.pdf
- http://polarexpressne.com/uploads/1/3/0/6/130621240/1160868.pdf
- http://anniegarrity.com/uploads/1/3/0/4/130489262/1520794.pdf
- http://studio-backstage-paris.com/uploads/1/3/0/3/130313555/9001479.pdf
- http://tridentinfosec.info/uploads/1/3/0/8/130874394/soxowomuv.pdf
- http://spottycatapps.com/uploads/1/3/1/3/131381031/a8886.pdf
- http://spalmedia.com/uploads/1/3/0/5/130539205/powowubufirageju.pdf
- http://cheapprintuk.com/uploads/1/3/0/2/130289311/mituvesateb.pdf
- http://olddogsreinetwork.com/uploads/1/3/1/6/131606603/90654deb.pdf
- http://jnbpanadero.com/uploads/1/3/0/6/130639231/8712676.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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006a43.bin` `43ca420c76cd748435b9eac57db2a9cc376a4c7a03101b8ffe06df676c440cf1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A43	10596 bytes

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