Malicious PDF — malware analysis report

Static analysis result for SHA-256 544d86e847f808e0…

MALICIOUS

PDF

80.7 KB Created: 2020-09-12 22:04:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6af22d9347421b838819f9acbf3e7615 SHA-1: 9c9a4b81b8fed60184fe92567a9bade877cd04c1 SHA-256: 544d86e847f808e0341ab97179eae6890f2dc6fe5029d62003ef31be403ea7a0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a prominent link that is flagged as a malicious redirector, disguised with keywords related to movie downloads. The document body, though heavily obfuscated, also contains the same malicious URL. The presence of a large number of embedded links, many pointing to static.usrfiles.com, suggests a link farm designed to obscure the true malicious 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.me/wix?keyword=padmavati+full+movie+download+hd+4k
    • http://xojuvisir.burnsidecentre.org.uk/uploads/1/3/0/7/130739720/196b2b.pdf
    • http://sugojirum.rottensocks.com/uploads/1/3/1/3/131379410/4099551.pdf
    • http://files.thebigbarmitzvah.com/uploads/1/3/1/3/131380292/0ffe199d.pdf
    • https://fullmovievs.com
    • https://static.usrfiles.com/ugd/dc6899_363918628d6145698c5ca9016f46ace7.pdf
    • https://static.usrfiles.com/ugd/b8c837_4a4f14071a4c426f88c4eb5238b1e70f.pdf
    • https://static.usrfiles.com/ugd/3be3a7_ba26837e1bf14f1f9b758d56822b5f53.pdf
    • https://static.usrfiles.com/ugd/c12414_67a592cad4ae4e088235d850ad1097ab.pdf
    • https://static.usrfiles.com/ugd/b8c837_ee60ffe794b9420398a5a1d2f0fbddd4.pdf
    • https://static.usrfiles.com/ugd/d1d005_6d1088b76d124f0db0459f3fd5d54a1a.pdf
    • https://static.usrfiles.com/ugd/238140_78baf3673873453c9f9258390938a720.pdf
    • https://cdn.shopify.com/s/files/1/0431/3363/2661/files/how_was_your_weekend_been_answer.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/rekezasefinabefefopufa.pdf
    • https://cdn.shopify.com/s/files/1/0435/2249/0528/files/50118226136.pdf
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/hyster_forklift_manual_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5018/files/saxevipobezuteguwovikulif.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000fd7f.bin
a4ebb76581a320c3c37bd38f16b8619ed781c034a386ea01c46ddd03aee7cbf1
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xFD7F 18968 bytes
font_00_sfnt_off0000c8fc.bin
7ad9c928e361f4d9ff65aa2fe51d6bc88e5ed67920d36fa5710cfd6d66e670d1
pdf-font-stream PDF embedded font (sfnt) at offset 0xC8FC 5180 bytes
font_01_sfnt_off0000da94.bin
565298cb317176f61f3c6f3238721cd10960b1617a8572eab6adaf730b752560
pdf-font-stream PDF embedded font (sfnt) at offset 0xDA94 10216 bytes
font_03_sfnt_off00011c46.bin
9004eedf9f1d91d5571e9a1355375b2fe6caefc215eb89b75a90b2e0dac8decb
pdf-font-stream PDF embedded font (sfnt) at offset 0x11C46 7160 bytes