PDF malware analysis — malicious · b4d851262177a6c6

MALICIOUS

PDF

39.8 KB Created: 2020-08-30 15:52:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 20d83c20c57aaeb8fdaf35fe6187961b SHA-1: d41246abf83766f9e59f7e9df275e9733c1643b3 SHA-256: b4d851262177a6c6a6d49453ce6b67fb4a59f580a25e0eda8cb08a412040a7da

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'savings account application form', aligning with phishing or scam tactics. The presence of a link farm and a callback lure heuristic further supports a malicious intent to redirect users to potentially harmful sites.

Heuristics 5

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
Fake invoice / payment lure low SE_INVOICE_LURE

Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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/wix?keyword=sbi+savings+account+application+form+pdf
- https://static.usrfiles.com/ugd/d775a9_06422e2c06724f56aaa4d3d7198c57be.pdf
- https://static.usrfiles.com/ugd/3cb679_58d74695257a463fafa90589f98a1e77.pdf
- https://static.usrfiles.com/ugd/a2d007_c1f897befd244cbdb1dab6ee73db223e.pdf
- https://static.usrfiles.com/ugd/b8c837_6dada1dcff33497a9e03ed2b0f4820b9.pdf
- https://static.usrfiles.com/ugd/0adedf_af654c4d9d084122b1b7ef054ebb461b.pdf
- https://static.usrfiles.com/ugd/8e1900_5de64c516d7142bfa71eb35fc3fb3e16.pdf
- https://static.usrfiles.com/ugd/b8c837_dd09ff8b39dc45ffbba8d63e1564af44.pdf
- https://static.usrfiles.com/ugd/47b1e8_3d75590675d848aeaac54bed848cada5.pdf
- https://static.usrfiles.com/ugd/ca300b_66067147cb6b4281a17f023879125b1c.pdf
- https://cdn.shopify.com/s/files/1/0430/0311/7719/files/software_system_design.pdf
- https://cdn.shopify.com/s/files/1/0429/6939/9452/files/8520576951.pdf
- https://cdn.shopify.com/s/files/1/0438/2385/7824/files/vetawivopusolamonakel.pdf
- https://cdn.shopify.com/s/files/1/0431/4539/6386/files/71847600628.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_off00005c6f.bin` `5296007b0b2676a8e53aa0f649c5d82e41f5672b2f90b17abf2168ad1db5d5cc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C6F	5780 bytes
`font_01_sfnt_off00006ff8.bin` `4d763f0a8d1d974b080daf7cfd653cbf684ea2804ad303ceceaa1fe143f47dd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FF8	10132 bytes

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