PDF malware analysis — malicious · 796ce490cc0ec06d

MALICIOUS

PDF

32.6 KB Created: 2020-08-28 21:15:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0f9256a593ff6e571219f55b0735fc3a SHA-1: 8f0867b9546f8052ae1f91d23e26b14aea1280f1 SHA-256: 796ce490cc0ec06df429e77d6a5237c130cf6ad995d41fa18c950f8dc259fb45

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. Additionally, it features a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is ttraff.cc, which is likely used to redirect users to a harmful destination. 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.cc/wix?keyword=understanding+business+law+curtin+pdf
- https://cdn.shopify.com/s/files/1/0434/4954/8966/files/coverage_hole_pre_alarm_for_client.pdf
- https://cdn.shopify.com/s/files/1/0433/7870/4536/files/seven_wonders_of_the_world_file.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekosipavejidowusa.pdf
- https://static.usrfiles.com/ugd/b8c837_46fcd9b0a21a4915936cc0e767b0b75e.pdf
- https://static.usrfiles.com/ugd/b8c837_cf53d8e365f34b8cb2a280aba733265a.pdf
- https://static.usrfiles.com/ugd/b8c837_af90e20f444e4385837840cf9242fc11.pdf
- https://static.usrfiles.com/ugd/b8c837_fde285ca2f0545b58b282b894a371ec7.pdf
- https://cdn.shopify.com/s/files/1/0432/8131/8056/files/bienes_y_servicios_con_tarifa_12.pdf
- https://cdn.shopify.com/s/files/1/0427/9471/3244/files/wawijegitipolaxavupe.pdf
- https://cdn.shopify.com/s/files/1/0437/0920/2597/files/tikaze.pdf
- https://static.usrfiles.com/ugd/b8c837_348a381b90e04564b8edfbc84f6041ee.pdf
- https://static.usrfiles.com/ugd/b8c837_8657dfc8d9494d70855fa76bb9c1a0e7.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_off00004180.bin` `408a72e0bec7029d4ab4cca8d034bc438753f81b93694c24ce2783507b94c337`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4180	5544 bytes
`font_01_sfnt_off0000546c.bin` `dbd724af3f648378dc4284fdbeb046c3373ea5f3b85e3415a553c5f4cf70bef3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x546C	9680 bytes

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