PDF malware analysis — malicious · c0bb37bb43ca713e

MALICIOUS

PDF

59.6 KB Created: 2020-08-09 14:37:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 048ff7a6ba9614c0d2212ab5e536b5bb SHA-1: cc28cb7d91cd8895b45292fe4f36d246ec664338 SHA-256: c0bb37bb43ca713ead3a35b1f8e79db459d9ef0e1e040953dd15897965c3f99b

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm designed to appear as legitimate Blender tutorials, but the primary link redirects to a known malicious domain. The document body, though heavily obfuscated, contains the malicious URL and references to Blender tutorials, reinforcing the lure. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=blender+tutorial+pdf+indonesia
- http://nakakazu.88jamz.com/uploads/1/3/0/7/130776131/97c97ecc91f9d.pdf
- http://files.davidfullerentertainment.com/uploads/1/3/0/8/130874672/70fffa.pdf
- http://files.sweettweetsby2.com/uploads/1/3/1/4/131482930/fevubame-xobexag-nekamalusu-zonom.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mufowotipopugisafe.pdf
- https://cdn.shopify.com/s/files/1/0432/0670/5311/files/judiselukitis.pdf
- https://cdn.shopify.com/s/files/1/0433/3764/6245/files/material_catequesis_de_primera_comunion_para_nios.pdf
- https://cdn.shopify.com/s/files/1/0434/7510/7992/files/ps_form_3849.pdf
- https://cdn.shopify.com/s/files/1/0430/6436/1113/files/wiwewupima.pdf
- https://cdn.shopify.com/s/files/1/0436/4494/4542/files/dadofubazeriko.pdf
- https://cdn.shopify.com/s/files/1/0431/8307/9592/files/77721394303.pdf
- https://cdn.shopify.com/s/files/1/0429/8627/4967/files/sadunodogabolusaxamug.pdf
- https://cdn.shopify.com/s/files/1/0431/6856/3351/files/bosch_axxis_dryer_manual.pdf
- https://cdn.shopify.com/s/files/1/0441/2915/7272/files/epistaxis_pathophysiology.pdf
- https://cdn.shopify.com/s/files/1/0433/5419/4070/files/64099253890.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
`font_00_sfnt_off00008fc6.bin` `b00ecd19090880924020417d584841e792181d3f8e6e7223e17d4fa9026fc8a8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8FC6	1560 bytes
`font_01_sfnt_off000097b6.bin` `bb2bbf9e2ede2aa9a6c3ea41e3408ecf135547a55e9a348ce1b6f3d7e78bad46`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x97B6	4968 bytes
`font_02_sfnt_off0000a89f.bin` `4a645be23241e5240575d5ae3be568e96c7b13305e56b4bf92906ccffa51c761`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA89F	13220 bytes
`font_03_sfnt_off0000d2a4.bin` `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD2A4	4324 bytes

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