PDF malware analysis — malicious · 7cf346125e8c6928

MALICIOUS

PDF

41.2 KB Created: 2020-08-30 16:59:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ab16bca79e4350de4632fdb444750823 SHA-1: 6e103127fccb638c5b32e7f96797129137db908a SHA-256: 7cf346125e8c692898245cf75c4f3e792fdb32b1f89418304c2e3ff1351cf05d

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains a significant number of embedded URLs, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large external PDF link farm, suggesting a spam or SEO manipulation tactic. The ML classifier also strongly flagged this PDF as malicious. The primary IOC is the malicious redirector URL.

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/wix?keyword=andamios+tubulares+ntp
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0437/0789/1877/files/18505370316.pdf
- https://cdn.shopify.com/s/files/1/0427/4916/5734/files/fokidafenapuwun.pdf
- https://cdn.shopify.com/s/files/1/0427/7462/6470/files/pirazatevi.pdf
- https://cdn.shopify.com/s/files/1/0439/4024/9755/files/18390148293.pdf
- https://cdn.shopify.com/s/files/1/0436/3229/6089/files/zanirozukewasilefoka.pdf
- https://cdn.shopify.com/s/files/1/0431/2740/6746/files/34443279055.pdf
- https://static.usrfiles.com/ugd/ee6770_8bb506c4c3db48a18089c24d100ffb19.pdf
- https://static.usrfiles.com/ugd/f515ca_f7441a60bd434a82b93097c5c1315475.pdf
- https://static.usrfiles.com/ugd/353d00_73162d01a9424f5ba937ea0660c8c7b9.pdf
- https://static.usrfiles.com/ugd/286fb8_6c68524f67944e8fba7d1a8099b7cdfb.pdf
- https://cdn.shopify.com/s/files/1/0432/5107/3174/files/58724308709.pdf
- https://cdn.shopify.com/s/files/1/0429/5131/1513/files/bademiya_chotemiya_film.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_off000061e1.bin` `7b965a463f471a44c731d17eb2267d8f89bccd2ff08a13b502db36e0857e232f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61E1	5236 bytes
`font_01_sfnt_off00007383.bin` `14ac0ea27eac42a7654977849693ff3c8a7307c9a318618ce2137362d0732748`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7383	10976 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.