PDF malware analysis — malicious · bee0ed6547c6ffc5

MALICIOUS

PDF

34.6 KB Created: 2020-09-05 02:45:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 02e6cb4049ea6c44931544194d70af76 SHA-1: a5123815d121523773e88f7bdfbeafa951f35493 SHA-256: bee0ed6547c6ffc57016921f8569ebbbba4ddf953c24744975b40e211ac08c36

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.com/pify?keyword=hematology+practical+book+pdf', is the primary IOC. The document body, though heavily obfuscated, contains text related to 'hematology practical book pdf', aligning with the lure. The presence of numerous other PDF links suggests a link farm or SEO poisoning tactic to distribute the malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=hematology+practical+book+pdf
- https://static.usrfiles.com/ugd/516793_06892d09b3cf4a35bd599cc452c02107.pdf
- https://static.usrfiles.com/ugd/37428b_a6b30f85ca6d4a9f9e88e17904c04c85.pdf
- https://static.usrfiles.com/ugd/a891c0_19f03582487048c1a9ccdbe7d86186b6.pdf
- https://static.usrfiles.com/ugd/38bf1f_61f071f2748d480d812fe02ffdedeb00.pdf
- https://cdn.shopify.com/s/files/1/0434/2143/4005/files/dujenagemikiparoribivem.pdf
- https://cdn.shopify.com/s/files/1/0427/4470/9276/files/95614144778.pdf
- https://cdn.shopify.com/s/files/1/0434/3159/2102/files/creative_writing_workbook.pdf
- https://cdn.shopify.com/s/files/1/0431/9982/4032/files/fogawufud.pdf
- https://static.usrfiles.com/ugd/02af14_50c57e286c9549b8b80b9c268727c71b.pdf
- https://static.usrfiles.com/ugd/ea78e0_5171986a69d54ac9b6f7b407489954b3.pdf
- https://static.usrfiles.com/ugd/430cb2_3c3d0f6714984ff9b321d61237f20e88.pdf
- https://static.usrfiles.com/ugd/67e251_b550833bcb6f4e0cb35f955cc9207ce6.pdf
- https://cdn.shopify.com/s/files/1/0433/6471/2599/files/laboratory_1_diffusion_and_osmosis_answer_key.pdf
- https://cdn.shopify.com/s/files/1/0432/2571/0750/files/26300442679.pdf
- https://cdn.shopify.com/s/files/1/0434/8447/9641/files/last_day_on_earth_map_guide.pdf
- https://cdn.shopify.com/s/files/1/0430/5341/6601/files/the_spread_of_nuclear_weapons_an_end.pdf
- https://cdn.shopify.com/s/files/1/0429/5357/2515/files/muwajotisoselasud.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_off00004964.bin` `7c3359964fcfc7c0e501f2fef669ee935f5876e3d1a0bdc705a58892be549265`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4964	5564 bytes
`font_01_sfnt_off00005c3a.bin` `f1671bc3b06db0c7985765b9d045430241dc65df94f064cd75071e432830fd1e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C3A	9712 bytes

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