PDF malware analysis — malicious · 45f4e6c2d3f8b756

MALICIOUS

PDF

40.0 KB Created: 2020-08-30 07:31:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9b113de90109d227163efef68cb58254 SHA-1: 3bc2b13b096205a1511e684c7209c4184e3f1076 SHA-256: 45f4e6c2d3f8b756adc64256ba83e30886ecd6f347c8e96be39f27ec7935f568

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link. The embedded URL https://ttraff.cc/wix?keyword=clyde+bergemann+soot+blower+manual is the primary indicator of malicious intent. The document body, though heavily obfuscated, also contains this URL, suggesting it's the intended lure. The presence of numerous other links, while many are benign, contributes to a link farm tactic, potentially for SEO manipulation or to obscure the malicious destination.

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.cc/wix?keyword=clyde+bergemann+soot+blower+manual
- https://static.usrfiles.com/ugd/7603ae_1dce1717e156408d8badb47c5d6966c4.pdf
- https://static.usrfiles.com/ugd/1e32c2_c478f6e375b1443fa8d086ac9299e40f.pdf
- https://static.usrfiles.com/ugd/b8c837_4dcae3f53e624f2aa444ceba4c10c12f.pdf
- https://static.usrfiles.com/ugd/80c1db_8f6dfe28b6fd4101bbc99b7214baefbe.pdf
- https://cdn.shopify.com/s/files/1/0428/1411/1903/files/baixar_jogos_de_futebol_para_android.pdf
- https://cdn.shopify.com/s/files/1/0438/5135/0166/files/american_crime_story_book.pdf
- https://cdn.shopify.com/s/files/1/0438/0796/5345/files/bonafide_certificate_institute_verification_form.pdf
- https://cdn.shopify.com/s/files/1/0438/6367/0939/files/fried_pork_chops_nutritional_information.pdf
- https://cdn.shopify.com/s/files/1/0428/3177/3852/files/89851515225.pdf
- https://static.usrfiles.com/ugd/b8c837_3ead4e8c8306479ab4a774814528b582.pdf
- https://static.usrfiles.com/ugd/b8c837_1e0d82353fcf42f18595ed52e8a2d523.pdf
- https://static.usrfiles.com/ugd/6290de_21ad41ad0b5142b68f010b254b4c42e4.pdf
- https://static.usrfiles.com/ugd/1f5cef_fb6a0b5817994c9a9defa98c659cb96a.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_off00005f34.bin` `7d78db9b12cd1ab8e044de8ed42741f8d7c54e5721533c7bab57d30aa6c65958`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F34	5384 bytes
`font_01_sfnt_off00007176.bin` `cf2a3f875f261efe035226ffbd04e179d2b83d364bcfd8618edad92bff91fb9f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7176	9956 bytes

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