PDF malware analysis — malicious · 3ea2075acb04f3a6

MALICIOUS

PDF

41.2 KB Created: 2020-08-08 14:19:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 50a6b98ab44dd983be47b34b86c099f9 SHA-1: d13e31e5a5f8fb25f854909e7470f5ced6fea63d SHA-256: 3ea2075acb04f3a6d30492232c2752e9bf726e2856b8805500c6a4df1fec91c3

120 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains a large number of embedded links, many of which point to external resources, indicating a link farm. One critical heuristic identified a malicious redirector link, 'https://ttraff.ru/pify?keyword=social+media+addiction+scale+student+form+pdf', which is likely used to redirect users to malicious sites. The document body, though heavily obfuscated, contains text related to a 'social media addiction scale student form pdf', suggesting a lure to encourage clicks on the malicious links. No scripts were extracted from this sample.

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=social+media+addiction+scale+student+form+pdf
- http://files.toddherzberg.com/uploads/1/3/1/4/131438389/pononovimu.pdf
- http://files.africaeuyouthlab.org/uploads/1/3/0/7/130738597/adf3c3b18.pdf
- http://files.dlspiritdolls.com/uploads/1/3/1/3/131379205/5462621.pdf
- https://cdn.shopify.com/s/files/1/0431/4192/2982/files/42745694921.pdf
- https://cdn.shopify.com/s/files/1/0431/1692/0996/files/buick_intellilink_hack.pdf
- https://cdn.shopify.com/s/files/1/0429/6137/1290/files/bafonitali.pdf
- https://cdn.shopify.com/s/files/1/0430/1360/3491/files/27302730110.pdf
- https://cdn.shopify.com/s/files/1/0431/1767/4656/files/fopolimod.pdf
- https://cdn.shopify.com/s/files/1/0434/3123/1655/files/digital_electronics_tokheim_download.pdf
- https://cdn.shopify.com/s/files/1/0429/9282/8579/files/detafobevoz.pdf
- https://cdn.shopify.com/s/files/1/0432/0490/3073/files/polugovis.pdf
- https://cdn.shopify.com/s/files/1/0438/3254/1344/files/fatit.pdf
- https://cdn.shopify.com/s/files/1/0431/4929/5776/files/present_simple_activities_for_beginners.pdf
- https://cdn.shopify.com/s/files/1/0440/7679/4021/files/25705933900.pdf
- https://cdn.shopify.com/s/files/1/0438/4607/4525/files/noneparexewonazugalejuja.pdf
- https://cdn.shopify.com/s/files/1/0435/1793/5770/files/70270714444.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_off0000624a.bin` `3bc863d75428903aa3afb435146961113fc4e689c1271e1f2f1796f63109aee9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x624A	5404 bytes
`font_01_sfnt_off00007495.bin` `80794e055ed554d48fdad016180d9c89bd3734c48b2c1468306aab1c8a6c100b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7495	10332 bytes

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