PDF malware analysis — malicious · 6d235b16008789cd

MALICIOUS

PDF

32.9 KB Created: 2020-08-20 18:59:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 70e6617ba678458574ca444f9356188c SHA-1: 472cf85187867d8dbc12d8fb78ab75d20d227940 SHA-256: 6d235b16008789cd44594707c58643516700184fabda61bfe094e556e292c23d

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged by a machine learning classifier and heuristics indicating malicious redirector links. It contains a large number of embedded URLs, many pointing to Shopify domains, but one critical URL leads to `ttraff.cc`, a known malicious redirector. The document body contains garbled text along with the same malicious URL, suggesting an attempt to lure users into clicking malicious links for phishing or malware distribution.

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/pify?keyword=alaipayuthey+kanna+ringtones+free++for+mobile
- http://files.openwindowdesigns.com/uploads/1/3/1/3/131380666/sufelilazad.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0428/7938/5766/files/baghi_kotkhai_weather_report.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74140302582.pdf
- https://cdn.shopify.com/s/files/1/0433/6871/0309/files/notonit.pdf
- https://cdn.shopify.com/s/files/1/0434/0740/9308/files/unlimited_power_by_anthony_robbins.pdf
- https://cdn.shopify.com/s/files/1/0439/8628/8798/files/a_level_physics_revision_notes_aqa.pdf
- https://cdn.shopify.com/s/files/1/0448/2924/5600/files/wild_magic_sorcerer_revised.pdf
- https://cdn.shopify.com/s/files/1/0432/6863/6834/files/vonagodozaju.pdf
- https://cdn.shopify.com/s/files/1/0431/5018/0512/files/xusovedotowigi.pdf
- https://cdn.shopify.com/s/files/1/0433/6808/7701/files/annotating_in_google_drive.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_off000042f0.bin` `b25d98a16b4b130b5b62cee790493e15bbc81ee2714b7372650ef9a1e5b4d41c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x42F0	5612 bytes
`font_01_sfnt_off000055d7.bin` `c45f3d4d9225ed253d9137a5da429677886a3040e2ec7db2fd017c2e8b35e0b7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x55D7	9688 bytes

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