Malicious PDF — malware analysis report

Static analysis result for SHA-256 44f718428e5250c7…

MALICIOUS

PDF

53.8 KB Created: 2020-08-31 11:46:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c26c728c761111fc3857a36fe5959d67 SHA-1: 18d0cc24c37bd7fd1413c6e501d111a49895f296 SHA-256: 44f718428e5250c75e39bf72c5de57706fc248d358fe63d511aba060376f68d8
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text that appears to be a lure for a database template. The primary malicious indicator is the link to 'ttraff.cc', which is flagged as a malicious redirector. This suggests the document is designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/wix?keyword=modelo+de+base+de+datos+relacional
    • https://cdn.shopify.com/s/files/1/0434/6966/8517/files/excel_mortgage_calculator_template_with_extra_payments.pdf
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/44539025865.pdf
    • https://cdn.shopify.com/s/files/1/0432/0608/2717/files/general_business_awareness.pdf
    • https://static.usrfiles.com/ugd/191a6d_acea5159888d4fc797b2a0a106ec44c1.pdf
    • https://static.usrfiles.com/ugd/361045_f1076fcd52d6440a91e7a0ea432f1048.pdf
    • https://static.usrfiles.com/ugd/4cf28d_8126674e91bb4e4d9c70c304fec3a621.pdf
    • https://static.usrfiles.com/ugd/b11f6d_2683b580bb264e1fb0ce9a65b4181f28.pdf
    • https://static.usrfiles.com/ugd/724bd4_02b6c1a81124495cbc5a382ce50a6d27.pdf
    • https://static.usrfiles.com/ugd/e78b77_7b36b54d13644ab5aac1c9fafd4c488e.pdf
    • https://static.usrfiles.com/ugd/cf79db_8ea1ed0b45154f379fa0765c40d01d15.pdf
    • https://static.usrfiles.com/ugd/ea78e0_48394a9740744aaa8acde130e31bc7e7.pdf
    • https://static.usrfiles.com/ugd/1cc7e8_0454d0927f5f47ac8f1e966c42ab98d5.pdf
    • https://static.usrfiles.com/ugd/19ce5d_9b89b298611c47a9ac6f8b2240542450.pdf
    • https://static.usrfiles.com/ugd/b8c837_9f6098a780084613aac26b7d57425968.pdf
    • https://static.usrfiles.com/ugd/29c71c_621067efca134cce9664bb8ba4f19b59.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_c8f45bd880c54cbd9e17a3f943d2d81f.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_005_off00009b6f.bin
a8f89f19680fac8bae8bcb201d30a2a3ab882e018280b417f02aa0856743a25c
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9B6F 18884 bytes
font_00_sfnt_off00006761.bin
02e846d113c632cc5706d9535640de8c58eda912bfefc0dbea5f534e8ac51541
pdf-font-stream PDF embedded font (sfnt) at offset 0x6761 4864 bytes
font_01_sfnt_off000077eb.bin
45a3cebb82b355f34af6e997e3fdba68424ea9c9ef4eb154edf852546e7d6aa2
pdf-font-stream PDF embedded font (sfnt) at offset 0x77EB 10800 bytes
font_03_sfnt_off0000b9d9.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0xB9D9 4324 bytes