PDF malware analysis — malicious · 3cba9e139db726ec

MALICIOUS

PDF

45.9 KB Created: 2020-09-01 13:01:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: be6f9410894bee0df1f6e107f2aa99ae SHA-1: fefdb8724d3d9c9d5793ebd84852bdf509ab0087 SHA-256: 3cba9e139db726eceb5b0ff65922569fbb0c926535918dda7900205b0c3a9681

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.club/wix?keyword=android+tablet+battery+voltage'. This URL is presented within the document body, suggesting a social engineering lure related to 'Android tablet battery voltage'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for obfuscation or to appear legitimate. The ML classifier strongly flagged this PDF as malicious.

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.club/wix?keyword=android+tablet+battery+voltage
- https://static.usrfiles.com/ugd/b8c837_83c94c35d1d04a19bc32a8329cb88f04.pdf
- https://static.usrfiles.com/ugd/221f3a_83f38df4a84f46e795089fb925a3da06.pdf
- https://static.usrfiles.com/ugd/585b1d_9df4c3a67b6743cfa9644aea55304e09.pdf
- https://static.usrfiles.com/ugd/b8c837_716f45f824c24082b3ec5e371a61cbdc.pdf
- https://cdn.shopify.com/s/files/1/0434/0894/9402/files/lomuxiguxutibamojal.pdf
- https://cdn.shopify.com/s/files/1/0466/7808/1701/files/wujugano.pdf
- https://cdn.shopify.com/s/files/1/0427/5834/0774/files/soul_surfer_book.pdf
- https://cdn.shopify.com/s/files/1/0429/9381/1619/files/philips_led_lighting_catalogue_2020.pdf
- https://cdn.shopify.com/s/files/1/0432/8521/7436/files/familijanosesivofasal.pdf
- https://cdn.shopify.com/s/files/1/0428/7699/3702/files/wlmp_to_wmv.pdf
- https://cdn.shopify.com/s/files/1/0432/3124/8539/files/3511142249.pdf
- https://cdn.shopify.com/s/files/1/0429/9948/0473/files/kufogisemogazokonajawow.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84407481133.pdf
- https://cdn.shopify.com/s/files/1/0438/6209/8085/files/91333465275.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000066d5.bin` `ba3727996f2f1d14b5a3571ef4ba3edc4951979d88576ce02c22d93b551ef8fb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66D5	4896 bytes
`font_01_sfnt_off0000778e.bin` `b7b57013200a0d6b47d4d504cf4b3ac50871c0536c237e2f2b42d4980abcf43f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x778E	10976 bytes
`font_02_sfnt_off00009d01.bin` `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9D01	4324 bytes

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