PDF malware analysis — malicious · d56153dbe2cefac8

MALICIOUS

PDF

40.2 KB Created: 2020-08-31 20:56:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 910ed07d41adfee676e987689e30f6c3 SHA-1: e49f2444bd4e7553e07d154d5567f5dde11e48fc SHA-256: d56153dbe2cefac820f9f8f9436a3969c0b3ed227e9edea2bc222aa356d3eb76

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a mass of external links, with a critical heuristic firing indicating a link to a known malicious redirector infrastructure at 'https://ttraff.ru/wix?keyword=the+effortless+experience+pdf'. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on 'static.usrfiles.com', suggesting a link farm or redirection scheme. The primary purpose appears to be directing users to malicious content via the identified redirector.

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/wix?keyword=the+effortless+experience+pdf
- https://static.usrfiles.com/ugd/dc98cc_9b16124acea44f8781fb6cda131f8bce.pdf
- https://static.usrfiles.com/ugd/ace02d_06b303b28b59468cafa2193de0994c64.pdf
- https://static.usrfiles.com/ugd/1df9ea_84d1082d0a8040b2ac0c3159b6ebbfea.pdf
- https://static.usrfiles.com/ugd/e4a001_7d05c7b9357a40f5b4da5b8e555731cb.pdf
- https://static.usrfiles.com/ugd/80bfa9_fda676607e8d41efa93aa6929a6f06c9.pdf
- https://static.usrfiles.com/ugd/aef5b7_63aa1a435af649349991308d208f7cb6.pdf
- https://static.usrfiles.com/ugd/b8c837_41d861efb37249c79c5cdb82e032f555.pdf
- https://static.usrfiles.com/ugd/3d0627_a0011abafe954b71817ab52f99633eb4.pdf
- https://static.usrfiles.com/ugd/d54300_11d034a2cc524990a3a49e52cb6ab969.pdf
- https://static.usrfiles.com/ugd/d94ae5_9b17128e6d374d108ce0b4baf6f3cf98.pdf
- https://static.usrfiles.com/ugd/b444d4_7696207cab5b439dbf6822a5e48e4d02.pdf
- https://static.usrfiles.com/ugd/b8c837_59de6ac12912479a83686689179d656e.pdf
- https://cdn.shopify.com/s/files/1/0428/7571/5743/files/potty_racers_3_unblocked_hacked.pdf
- https://cdn.shopify.com/s/files/1/0433/7762/3194/files/43694733319.pdf
- https://cdn.shopify.com/s/files/1/0437/2257/1930/files/febow.pdf
- https://cdn.shopify.com/s/files/1/0431/1190/7488/files/toxer.pdf
- https://cdn.shopify.com/s/files/1/0435/2134/3647/files/44320826340.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_off00005f44.bin` `30cc61fb09cbc90b10fcc5bf5f6498b85ad9437cec0f53385b3a97fabf47dab5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F44	5048 bytes
`font_01_sfnt_off00007073.bin` `983e4200328dced33535919876bd4530cfd5c4188a0ad0bc029c92ba6c948f15`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7073	10576 bytes

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