PDF malware analysis — malicious · 27a07c8af9b38e55

MALICIOUS

PDF

44.8 KB Created: 2020-08-11 17:06:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7825843ccb04c6a76839fdeab5bc8102 SHA-1: aede5194c2e63a73e987981d59a6ac717a55c9bc SHA-256: 27a07c8af9b38e55699237e499f4e8081484b332549940dba189ecce593e6eb3

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document is designed to trick users into visiting a malicious site by presenting it as a PDF download.

Heuristics 3

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.
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.ru/wb?keyword=descargar%20cuestionario%20clase%20b%20pdf
- http://files.new-model-tours.com/uploads/1/3/0/8/130874085/1868684.pdf
- http://files.mgracetransitions.com/uploads/1/3/2/6/132683088/nuvoxufamesas.pdf
- http://files.pathrochestermn.net/uploads/1/3/1/1/131164054/ee19c78995.pdf
- https://cdn.shopify.com/s/files/1/0438/1288/0541/files/poemas_fernando_pessoa.pdf
- https://cdn.shopify.com/s/files/1/0433/7546/0515/files/app_inventor_2_advanced_concepts.pdf
- https://cdn.shopify.com/s/files/1/0428/5808/6559/files/vajafik.pdf
- https://cdn.shopify.com/s/files/1/0434/6737/4758/files/lopapisu.pdf
- https://cdn.shopify.com/s/files/1/0433/7529/6670/files/70477848919.pdf
- https://cdn.shopify.com/s/files/1/0435/3458/1911/files/attack_on_titan_season_2_free.pdf
- https://cdn.shopify.com/s/files/1/0434/0934/2621/files/dewoluwewugupebepawefad.pdf
- https://cdn.shopify.com/s/files/1/0428/3262/5831/files/kaiji_ultimate_survivor_episode_1.pdf
- https://cdn.shopify.com/s/files/1/0431/0558/3266/files/carbohydrates_ppt.pdf
- https://cdn.shopify.com/s/files/1/0434/1635/4978/files/schooled_full_book.pdf
- https://cdn.shopify.com/s/files/1/0431/2095/1450/files/94696820140.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005831.bin` `ae967d864ad747bb710d2f6fa322c8e2b9d666141ce3d81f05a0ecd0cee481b4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5831	5344 bytes
`font_01_sfnt_off00006a5c.bin` `246569b5fd7226bd0ebf3c016de7ba0bf82e996896d660a08030b2af0a08efd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A5C	1936 bytes
`font_02_sfnt_off0000739d.bin` `2d21afa5fb3d3c8ee5ecf8bc3ad2935515e918ff8c77b5e35e45397a4130cdfb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x739D	10648 bytes
`font_03_sfnt_off00009612.bin` `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9612	4324 bytes

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