PDF malware analysis — malicious · bf9913594d19fa48

MALICIOUS

PDF

36.2 KB Created: 2020-09-02 01:17:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9e10038863443dc65a9edd62d8069441 SHA-1: a927260d815424924e09c58df6a135cf150048ed SHA-256: bf9913594d19fa4877832011eca9b61ee8744abd9eb93c6a3c07345dfaf4ca29

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=converse+plataforma+blancas+altas+linea+roja'. This URL is likely used to redirect users to a malicious site for phishing or malware delivery. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack. The presence of numerous external PDF links, while some are benign, suggests a link farm strategy potentially used 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=converse+plataforma+blancas+altas+linea+roja
- https://static.usrfiles.com/ugd/f1780b_ca57e8ca36434da8a54ee70f0cfcbcda.pdf
- https://static.usrfiles.com/ugd/b8c837_10c490bdd8774643ac54b12024c3efec.pdf
- https://static.usrfiles.com/ugd/756799_e77613f16f214ca9965920ee44c1a971.pdf
- https://static.usrfiles.com/ugd/850f07_b2c23b31aecf4919937b681a5bbcb11a.pdf
- https://static.usrfiles.com/ugd/b8c837_84be0dd07e9441c8ba4c6d17d03b8329.pdf
- https://static.usrfiles.com/ugd/99a8f2_4d91ecb0677d472189a9ea36df821a58.pdf
- https://static.usrfiles.com/ugd/efb3f0_8358d7a2e131492e895e39c029d7cbd5.pdf
- https://static.usrfiles.com/ugd/c1c462_5c27598e7e5e4c338208f941c46b793e.pdf
- https://cdn.shopify.com/s/files/1/0438/2290/7554/files/color_psychology_test.pdf
- https://cdn.shopify.com/s/files/1/0433/0828/6105/files/jawumoz.pdf
- https://cdn.shopify.com/s/files/1/0435/5555/3443/files/avengement_movie_soundtrack.pdf
- https://cdn.shopify.com/s/files/1/0433/4233/2057/files/sample_letter_of_recommendation_for_medical_school_from_doctor.pdf
- https://cdn.shopify.com/s/files/1/0435/5575/0049/files/60517150875.pdf
- https://static.usrfiles.com/ugd/b8c837_96d04563b91e43d4904875a785eaa00c.pdf
- https://static.usrfiles.com/ugd/ddb60a_618b4943bc38477f9ba7be29d2983690.pdf
- https://static.usrfiles.com/ugd/07e02c_e9ea5b9bb99b4ffa8410c358774fa360.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_off00004db7.bin` `20ea64ecdf7b586b4faec2c3f6a03fc71e80177fff8f71a0c87f70c29f2bb28d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4DB7	5344 bytes
`font_01_sfnt_off00005fd6.bin` `13f44fbd6faf4a6da17b60c26928009f3e031d1e67c3a21fdba8332c11756c39`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FD6	10444 bytes

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