PDF malware analysis — malicious · 3f8525e4b99c78aa

MALICIOUS

PDF

51.1 KB Created: 2020-08-04 14:51:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7c9a50bdbe504b4444a95edf299f3599 SHA-1: 160365be7df48f3abfe95098cccf8f3efeaac032 SHA-256: 3f8525e4b99c78aa19ed8d2174641e75b9fd0591e0059dbc54567ea6eb289113

128 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains numerous embedded links, with at least one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for an 'advanced excel course tutorial pdf'. This suggests a phishing or social engineering attack aimed at redirecting users to malicious content. No scripts were extracted from this sample.

Heuristics 4

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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=advanced+excel+course+tutorial+pdf
- http://files.butterflyworldcoombs.com/uploads/1/3/2/7/132712096/8644542.pdf
- http://files.edenspabeirut.com/uploads/1/3/1/4/131437418/1309a34f0.pdf
- http://jagarup.cgapak.org/uploads/1/3/0/8/130874474/bomamukonut.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/japoxotoruzub.pdf
- https://cdn.shopify.com/s/files/1/0435/1806/6842/files/fejebiw.pdf
- https://cdn.shopify.com/s/files/1/0431/1538/0892/files/79012753128.pdf
- https://cdn.shopify.com/s/files/1/0434/2707/0104/files/vadibotosevu.pdf
- https://cdn.shopify.com/s/files/1/0429/6074/8695/files/82332534153.pdf
- https://cdn.shopify.com/s/files/1/0432/7551/8107/files/27700461094.pdf
- https://cdn.shopify.com/s/files/1/0431/7505/1424/files/61888783357.pdf
- https://cdn.shopify.com/s/files/1/0432/7194/6398/files/juzuxugano.pdf
- https://cdn.shopify.com/s/files/1/0431/1325/0972/files/pivekoxe.pdf
- https://cdn.shopify.com/s/files/1/0433/6241/8847/files/setarujizaxemifumibatonek.pdf
- https://cdn.shopify.com/s/files/1/0430/8379/2533/files/gilizexorasamovadop.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pigirerunozekolufis.pdf
- https://cdn.shopify.com/s/files/1/0436/2846/2233/files/netgear_nighthawk_mr1100_manual.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_off00008900.bin` `60fad44d8177dcf08b61251f17bab8fb54dfcf5bb1d5d3e5cf7ceb65de142f66`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8900	5268 bytes
`font_01_sfnt_off00009b03.bin` `1fe245253c9dfdf95737b068ac25f7f487b0b33edb302ad0eed1d644a46931d2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9B03	10812 bytes

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