PDF malware analysis — malicious · 70aa1615e2a7387c

MALICIOUS

PDF

47.7 KB Created: 2020-08-31 06:24:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b7d7be61bcec39b1d2c746715000c547 SHA-1: 2676673118333d00ff4341cf51a27577ee713e62 SHA-256: 70aa1615e2a7387c939b452bc004acfb4ea987608bb0ef7c82cc04250ddfe68a

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector. The primary malicious URL, 'https://ttraff.cc/wix?keyword=bootstrap+modal+ajax+file+upload', is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains this URL and other benign-looking PDF links, suggesting a lure to a malicious resource.

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=bootstrap+modal+ajax+file+upload
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/f84671_1b7ff0bfa49741b5ab7d4c83c5d81cc2.pdf
- https://static.usrfiles.com/ugd/b8c837_b207ad7ef46945b7889860c5efc70661.pdf
- https://static.usrfiles.com/ugd/b8c837_ffa8688089a64fd181585a1459adc7e0.pdf
- https://static.usrfiles.com/ugd/7f16bd_4787e1ff73c44e6ea18cf207dd80c4f1.pdf
- https://cdn.shopify.com/s/files/1/0461/9334/4670/files/birunegudefewalodowunogu.pdf
- https://cdn.shopify.com/s/files/1/0440/1653/3654/files/72811103088.pdf
- https://cdn.shopify.com/s/files/1/0430/6750/6837/files/define_lipids.pdf
- https://cdn.shopify.com/s/files/1/0434/7278/1477/files/23852690910.pdf
- https://cdn.shopify.com/s/files/1/0434/4738/6264/files/lagu_orgen_alta_terbaru_2019.pdf
- https://cdn.shopify.com/s/files/1/0431/1197/3026/files/23129883094.pdf
- https://cdn.shopify.com/s/files/1/0433/9941/3925/files/american_airlines_refund_information_on_aa._com.pdf
- https://cdn.shopify.com/s/files/1/0437/0733/4810/files/91465308085.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_off00006a50.bin` `72376a211851f4d0041cf8ae9d9c39d554ef7ffe9f97c7c5a463f87644c92fbf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A50	5380 bytes
`font_01_sfnt_off00007c93.bin` `4e2d78bf01f105348fdb299d1b7535160227a25d32e90a5e8af651b77552ef60`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C93	16512 bytes

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