PDF malware analysis — malicious · af29450566c6db34

MALICIOUS

PDF

56.3 KB Created: 2020-09-01 01:05:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: eb73985cb33be221389d243c81d101a4 SHA-1: c979f08f762c25d84ed5555b455278fe2b41cfdb SHA-256: af29450566c6db347f94bb798f09f8f61b1604651fe8e261d4e28799e5711ee4

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a flyer mockup template. This indicates a phishing attempt to redirect the user to malicious infrastructure. The ML classifier strongly supports the malicious verdict. No scripts were extracted from this sample.

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/pify?keyword=flyer+mockup+template+psd
- https://static.usrfiles.com/ugd/cc14e4_d3f1b623192e46bdbe428b7c1990d04c.pdf
- https://static.usrfiles.com/ugd/b8c837_4bf3d8c6071a45e3a927d926aac3c04e.pdf
- https://static.usrfiles.com/ugd/b8c837_5bce72a7ffd14caa9d8db5abc9e0092a.pdf
- https://static.usrfiles.com/ugd/b8c837_ab181c78135d41809a4d3d37dd25602a.pdf
- https://cdn.shopify.com/s/files/1/0430/5377/7047/files/organelos_citoplasmaticos.pdf
- https://cdn.shopify.com/s/files/1/0465/0549/2638/files/mewejisixugosalin.pdf
- https://cdn.shopify.com/s/files/1/0463/2969/2322/files/panchatantra_stories_in_marathi_free.pdf
- https://cdn.shopify.com/s/files/1/0437/2489/8453/files/robirenogogotomuj.pdf
- https://cdn.shopify.com/s/files/1/0432/3393/5519/files/andrea_hirata_sirkus_pohon.pdf
- https://cdn.shopify.com/s/files/1/0433/0107/7142/files/diwobisuwerewitizakowa.pdf
- https://cdn.shopify.com/s/files/1/0431/5843/8039/files/new_holland_ls180.pdf
- https://cdn.shopify.com/s/files/1/0431/5332/6241/files/college_board_sat_math_2_practice_test.pdf
- https://cdn.shopify.com/s/files/1/0431/0004/5465/files/nesumezadediwe.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_off00009f08.bin` `dabd47e6c95da5aa0404f1776f4dc8b539d3906fb0ade8dded6d2522c4d62fdf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9F08	5340 bytes
`font_01_sfnt_off0000b127.bin` `b8ca8f37840328dda0f639eb24f95ae6c762a0b4bad864a0cf01b05e42ae0af2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB127	10308 bytes

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