PDF malware analysis — malicious · 31894955241596b7

MALICIOUS

PDF

73.8 KB Created: 2020-08-07 22:28:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: aa56058ae6bbe41957615c43ac125e44 SHA-1: 22ad64800355160278a71ad30b018830fcd03814 SHA-256: 31894955241596b79e448f3d52ca36410e17f8dc7d9d8442e19f0d9dca3a52c6

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, many of which point to a link farm hosted on Shopify. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=algorithms+in+real+algebraic+geometry+pdf'. This suggests the document is designed to redirect users to malicious sites under the guise of providing a PDF document. 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/pify?keyword=algorithms+in+real+algebraic+geometry+pdf
- http://files.stkjustlabskennel.com/uploads/1/3/0/8/130814284/4461677.pdf
- http://files.sandytoessociety.org/uploads/1/3/1/4/131438142/vuxex.pdf
- http://files.singaporedrumshop.com/uploads/1/3/1/8/131857818/79491fe8c8684.pdf
- http://files.theghostdidit.com/uploads/1/3/0/9/130969879/pakijiburizuvuwan.pdf
- https://cdn.shopify.com/s/files/1/0432/8492/2526/files/44053222082.pdf
- https://cdn.shopify.com/s/files/1/0438/9086/8379/files/gobijonowixulusol.pdf
- https://cdn.shopify.com/s/files/1/0433/9544/8997/files/fewowive.pdf
- https://cdn.shopify.com/s/files/1/0431/5152/4008/files/nebajusetetiwajewupow.pdf
- https://cdn.shopify.com/s/files/1/0436/0444/3299/files/tifotubo.pdf
- https://cdn.shopify.com/s/files/1/0430/8277/6725/files/71261280952.pdf
- https://cdn.shopify.com/s/files/1/0427/7708/4070/files/mexevenu.pdf
- https://cdn.shopify.com/s/files/1/0429/8512/8090/files/41106924222.pdf
- https://cdn.shopify.com/s/files/1/0428/2214/0063/files/dimikosawepogejo.pdf
- https://cdn.shopify.com/s/files/1/0432/3019/9966/files/beronijotuta.pdf
- https://cdn.shopify.com/s/files/1/0429/2391/7478/files/36471030850.pdf
- https://cdn.shopify.com/s/files/1/0429/7680/5018/files/76236152417.pdf
- https://cdn.shopify.com/s/files/1/0436/2141/7122/files/examples_of_non_vascular_plants.pdf
- https://cdn.shopify.com/s/files/1/0431/8052/3678/files/pasikakopewaxedip.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000dea5.bin` `00e1aacec7119e4e2bc3292c07ff7be7dc1ac53f84aa5234631a421fc6570350`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDEA5	5800 bytes
`font_01_sfnt_off0000f245.bin` `f2843a785b38ade784c9a42f9afc0a5e97973e6d295ec67dc4530bfb28e7ad1f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF245	12040 bytes

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