PDF malware analysis — malicious · e8f3e8cf07e180cc

MALICIOUS

PDF

58.5 KB Created: 2020-08-10 22:39:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9c323da8422e3a2f2fdce580901c2ef1 SHA-1: eea8c0ddb2b2e87f6893aa2d63274174a6dfe01f SHA-256: e8f3e8cf07e180cc0d76cb1ba9e0b22a5df4aa1038fb3c91536d071f58a16821

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 pointing to 'https://ttraff.com/pify?keyword=arabic+language+basics+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. The primary attack pattern involves tricking the user into visiting a malicious URL disguised as a helpful PDF.

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=arabic+language+basics+pdf
- http://files.kpinner.com/uploads/1/3/0/9/130969310/zokamufebos.pdf
- http://files.recoveryhumanface.org/uploads/1/3/1/1/131164174/d0fd56.pdf
- http://files.furnacefallsfarm.com/uploads/1/3/2/6/132682802/38aa2cad3a9.pdf
- https://cdn.shopify.com/s/files/1/0433/0071/6694/files/85710939240.pdf
- https://cdn.shopify.com/s/files/1/0431/1184/1949/files/76176004144.pdf
- https://cdn.shopify.com/s/files/1/0431/6784/2465/files/zigoku.pdf
- https://cdn.shopify.com/s/files/1/0431/9546/5892/files/testy_gramatyczne_angielski_gimnazjum.pdf
- https://cdn.shopify.com/s/files/1/0433/6992/2714/files/45955858449.pdf
- https://cdn.shopify.com/s/files/1/0432/4560/0936/files/lepometag.pdf
- https://cdn.shopify.com/s/files/1/0441/2165/3400/files/tritton_usb_2._0_vga_adapter_driver.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lozafawofife.pdf
- https://cdn.shopify.com/s/files/1/0432/5857/7056/files/42762444163.pdf
- https://cdn.shopify.com/s/files/1/0429/9112/4643/files/boxutudowozoned.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
`stream_006_off0000a084.bin` `c5a081cc198f8fdb19d83c50e3760c05d4aa079d5c1b1bb2b733449ccfffe415`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xA084	25864 bytes
`font_00_sfnt_off00006986.bin` `5edb2d1ef51cd260fa33712f95f9483cec5f8ac26e7f61e4b2914d38aa7d5cb1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6986	5144 bytes
`font_01_sfnt_off00007afa.bin` `6000b69f01045d11f58cf73c932767f74914ec7d0d78d28e0f4ab5742a7f690a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7AFA	12028 bytes
`font_03_sfnt_off0000cec5.bin` `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCEC5	4324 bytes

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