PDF malware analysis — malicious · 4bcd6ec93fc0a3ba

MALICIOUS

PDF

49.5 KB Created: 2020-08-04 01:53:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c4896258258c5c008c5fa832d34e8c24 SHA-1: 2fbde4c247189ee324c0a9bb24e2b9a24353b4f6 SHA-256: 4bcd6ec93fc0a3baeaf50f6e795d93642a7304b175f0a320a8bad8d16bf15e67

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to 'https://ttraff.cc/pify?keyword=aptitude+tests+pdf'. This indicates a likely attempt to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains text fragments and URLs that reinforce the lure of 'aptitude tests pdf'. The presence of numerous shopify.com links suggests a link farm used to improve SEO for malicious content.

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=aptitude+tests+pdf
- http://files.alextechstudio.com/uploads/1/3/1/4/131437490/583d61a.pdf
- http://jebujisi.meganartandphoto.com/uploads/1/3/1/4/131409200/wozimet.pdf
- http://xekirow.vandrej.com/uploads/1/3/2/8/132815002/nixep.pdf
- http://files.redhawktheaterbc.com/uploads/1/3/1/3/131381095/najusuvufipade_ruzon_tebuzogodotede_revalizo.pdf
- https://cdn.shopify.com/s/files/1/0432/3488/5792/files/21494120885.pdf
- https://cdn.shopify.com/s/files/1/0432/4796/0232/files/90587690483.pdf
- https://cdn.shopify.com/s/files/1/0431/7777/1162/files/tugadejabuvalatel.pdf
- https://cdn.shopify.com/s/files/1/0435/1016/9759/files/29579914193.pdf
- https://cdn.shopify.com/s/files/1/0435/3438/5303/files/fences_product_key.pdf
- https://cdn.shopify.com/s/files/1/0438/6547/3189/files/69603695589.pdf
- https://cdn.shopify.com/s/files/1/0428/7512/5923/files/vezaputijimanukek.pdf
- https://cdn.shopify.com/s/files/1/0441/4429/6088/files/32509170471.pdf
- https://cdn.shopify.com/s/files/1/0430/4656/8098/files/bexemujavalubosuzijetuvex.pdf
- https://cdn.shopify.com/s/files/1/0430/1373/4563/files/bella_s_lullaby_sheet_music.pdf
- https://cdn.shopify.com/s/files/1/0434/8523/3304/files/kemogidemubo.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_off00006fbf.bin` `bbc8376790da5691c98e600c5efbc9e508b07979858d6ffb8139780d07b8d69e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FBF	4352 bytes
`font_01_sfnt_off00007e96.bin` `9fc8242b706c47b00ad110eb277f64796573899267a226733f8b9397b15d7c2f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E96	14348 bytes
`font_02_sfnt_off0000ab57.bin` `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAB57	4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.