PDF malware analysis — malicious · d9f786ba96e4f5c1

MALICIOUS

PDF

39.5 KB Created: 2020-08-08 21:12:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a87d3b06f7a9486e79123c2faae62ec0 SHA-1: e9725c9467a42823c9e00f79b6874cdc94642a92 SHA-256: d9f786ba96e4f5c122c273e339bc027dd30fcedb45e60c6f877d23a2bcb58de4

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes the malicious URL and references to other PDFs hosted on Shopify. This suggests a link farm or redirection tactic to distribute malware or conduct phishing. No scripts were extracted from this sample.

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/wb?keyword=gretagmacbeth%20d19c%20densitometer%20manual
- http://files.stephanieryckman.com/uploads/1/3/0/8/130874569/zelidijigipifolid.pdf
- http://kenowed.never-mor.com/uploads/1/3/0/7/130740013/vibasupe_nanegusadi.pdf
- http://files.choikingshan.com/uploads/1/3/0/7/130775002/tomopuw-nigonadaz-sagelemu.pdf
- https://cdn.shopify.com/s/files/1/0430/0354/3715/files/22203734671.pdf
- https://cdn.shopify.com/s/files/1/0434/5597/1492/files/70802210900.pdf
- https://cdn.shopify.com/s/files/1/0431/9179/5875/files/68466524265.pdf
- https://cdn.shopify.com/s/files/1/0429/9302/5187/files/kugenaburu.pdf
- https://cdn.shopify.com/s/files/1/0430/9565/4554/files/34753412412.pdf
- https://cdn.shopify.com/s/files/1/0429/6799/0438/files/cardio_kickboxing_workout.pdf
- https://cdn.shopify.com/s/files/1/0429/9938/2170/files/kidodiwifafuradaka.pdf
- https://cdn.shopify.com/s/files/1/0434/1540/4702/files/symmetry_surgical_catalog.pdf
- https://cdn.shopify.com/s/files/1/0432/1411/0880/files/gtb_aptitude_test_questions.pdf
- https://cdn.shopify.com/s/files/1/0429/2821/0073/files/fudiselabap.pdf
- https://cdn.shopify.com/s/files/1/0432/1624/0807/files/vudizoviv.pdf
- https://cdn.shopify.com/s/files/1/0437/0395/9720/files/3547838444.pdf
- https://cdn.shopify.com/s/files/1/0436/9612/8153/files/46893616371.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_off00004e50.bin` `44f7776c1ca6af56ae4207c7d6aa945f32947928830f344e91b5c6f2be4f215f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4E50	5612 bytes
`font_01_sfnt_off0000613b.bin` `5ee8634bf9e52cd8a473462975d9704ab274b8170682dd9da9f5a5a412b0ba47`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x613B	9784 bytes
`font_02_sfnt_off000082b5.bin` `8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x82B5	4324 bytes

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