PDF malware analysis — malicious · 4dab4b5299e52c68

MALICIOUS

PDF

44.6 KB Created: 2020-08-04 05:59:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a81640b95f32e0ccba549f1813aa10fa SHA-1: cc5dbb184fc91f79a320398c1aea004f3a66e419 SHA-256: 4dab4b5299e52c689efeb4b74a7689f7c0496be1999d80b612c0355d0580ea1e

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, suggests a lure for downloading a PDF related to composite materials. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or malware distribution attempt. 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.com/pify?keyword=composite+material+book+pdf+download
- http://files.ibmypphe.com/uploads/1/3/0/8/130873908/bee5821c04dddf.pdf
- http://files.laurelmburas.com/uploads/1/3/1/4/131405977/821ed3f.pdf
- http://files.jeremy-dodson.com/uploads/1/3/1/8/131872178/765959.pdf
- http://files.craighouk.com/uploads/1/3/1/3/131398236/6131216.pdf
- https://cdn.shopify.com/s/files/1/0436/4759/8742/files/89888937393.pdf
- https://cdn.shopify.com/s/files/1/0431/5149/1233/files/kexebojixuxopigepapekuz.pdf
- https://cdn.shopify.com/s/files/1/0436/6503/1321/files/ascii_middle_finger_one_line.pdf
- https://cdn.shopify.com/s/files/1/0432/5556/2398/files/bamejolanikurupafubo.pdf
- https://cdn.shopify.com/s/files/1/0429/7038/2490/files/bepagojubilebapepa.pdf
- https://cdn.shopify.com/s/files/1/0433/3761/3461/files/gemiraduputon.pdf
- https://cdn.shopify.com/s/files/1/0440/1987/5998/files/green_smoothies_recipes_for_weight_loss.pdf
- https://cdn.shopify.com/s/files/1/0429/0481/3721/files/35983848022.pdf
- https://cdn.shopify.com/s/files/1/0430/9932/4580/files/beforejijipudo.pdf
- https://cdn.shopify.com/s/files/1/0432/3488/5792/files/micah_stampley_our_god.pdf
- https://cdn.shopify.com/s/files/1/0430/2834/9085/files/51401308167.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_off000059df.bin` `08c371d83d33aed8cccea9b8e8169c7ce32322d47c03712f23c720d125b0506e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x59DF	5388 bytes
`font_01_sfnt_off00006c19.bin` `33d80b5e357abfa3ea91f5eff18928953f8e36d8e9a7aea158c838e8ae756dd9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C19	2116 bytes
`font_02_sfnt_off000075e3.bin` `a68e53a4055f6108f2417682a1243ec3e040dca3c177dd73d3935f38a1a8d566`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x75E3	15216 bytes

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