Malicious PDF — malware analysis report

Static analysis result for SHA-256 4874c017dfd53f12…

MALICIOUS

PDF

41.4 KB Created: 2020-08-29 03:21:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fe95cfb92826cd27f4ff8077847f33a SHA-1: 52d9f0c9d295756c276e6a4a022ef780197eec88 SHA-256: 4874c017dfd53f12e85dac60f70e84b451730a75cfa6d0f6c275cec5240038b9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Bagas31 pes 2020' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of multiple links to external PDFs, many hosted on static.usrfiles.com, indicates a link farm strategy to obscure the ultimate destination.

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=bagas31+pes+2020
    • https://static.usrfiles.com/ugd/b8c837_af5b39bead9645019c6916031e6faa88.pdf
    • https://static.usrfiles.com/ugd/b8c837_30a319ecbfb8443d8351d97a3c243ee1.pdf
    • https://static.usrfiles.com/ugd/b8c837_936e6d706b1745e681c286eb4167454a.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e6f9280bff74ab08132e5d1f533c3a3.pdf
    • https://cdn.shopify.com/s/files/1/0434/1592/8997/files/wozebuzujal.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/xaboved.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21244882445.pdf
    • https://cdn.shopify.com/s/files/1/0457/8630/0572/files/indesign_newspaper_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/1212/0998/files/mudeposegirazagarezit.pdf
    • https://static.usrfiles.com/ugd/b8c837_e04bb1d1195e4d4fab22b1ded5a0f9f2.pdf
    • https://static.usrfiles.com/ugd/b8c837_c2fb51372f29401490b51c546366477a.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c2e045a93f94478b4936269a56ed123.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e93d75c96154d1f9f1bd31d147980fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8ac8470e0cb42a2a898a88c7b77eccc.pdf
    • https://static.usrfiles.com/ugd/b8c837_a2069fcc385d483c8417b5d2b6ac7d3a.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.

FilenameKindSourceSize
font_00_sfnt_off0000645b.bin
a49e06e6e3c2177dac077d35d0670037264618f76b314cfdc74d875c68ecf025		 pdf-font-stream PDF embedded font (sfnt) at offset 0x645B 5400 bytes
font_01_sfnt_off000076d1.bin
b6fdf52546ea1924f030f37ceeac4b7cf9dcca889b0036bc7018f381936e4951		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76D1 10168 bytes

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