PDF malware analysis — malicious · 02e3b0f852fe751e

MALICIOUS

PDF

41.8 KB Created: 2020-08-30 04:01:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 130862d67aed433106c7d58cc52a1389 SHA-1: 3be31d3b8bc5baa20f351b8e35b6f303bc1d7d83 SHA-256: 02e3b0f852fe751e31a5f3c00bc41cc57327fe3628a04584ef8686315a5f91be

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a malicious redirector link and a large number of external PDF links, indicating a link farm or SEO poisoning attempt. The primary malicious URL identified is https://ttraff.cc/wix?keyword=inkscape+icons+too+small, which is likely used to direct users to further malicious content. The ML classifier strongly supports the malicious verdict.

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/wix?keyword=inkscape+icons+too+small
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/6590/9160/files/tipos_de_recursos_naturales.pdf
- https://cdn.shopify.com/s/files/1/0433/2571/8678/files/salodisuralasi.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/basugogigarerebid.pdf
- https://static.usrfiles.com/ugd/158fb9_da801558a7bb4496a8fa3cd678695da5.pdf
- https://static.usrfiles.com/ugd/5d2cf3_43cd335a67d7439f996a11dfd3bbb65e.pdf
- https://static.usrfiles.com/ugd/d54300_b9f6cb088811416aaf7fc71ac47dda8f.pdf
- https://static.usrfiles.com/ugd/9f6a24_e7704854f6074626b244e250069e8e13.pdf
- https://cdn.shopify.com/s/files/1/0430/3929/3589/files/kenmore_106_water_filter.pdf
- https://cdn.shopify.com/s/files/1/0431/4044/8410/files/convert_to_doc_zamzar.pdf
- https://static.usrfiles.com/ugd/fd3290_6a2bf5818e1946e7804704d6872423d6.pdf
- https://static.usrfiles.com/ugd/81d6a4_6a4598b7eed741f3a2b5f2bfdc88bccf.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000678c.bin` `84e6119d8f4702c41f3a247c2e95fc8dfd50e3619aa15e56a006a58f91d5168b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x678C	4984 bytes
`font_01_sfnt_off0000786c.bin` `f7cfdf3e8b5f6a5450228236955b1df4517512ed039cef9631e3d6cb4366a31a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x786C	10016 bytes

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