Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cee0714234010aa…

MALICIOUS

PDF

35.3 KB Created: 2020-08-30 14:14:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d60636e6e3646b559bc4777e85bc85a0 SHA-1: 6805c766f5a3dccb9a3220fd7cacfdb6009f9103 SHA-256: 1cee0714234010aa6d7d065ec242cb69e006f84c42200fb07f02f92d59ab98e7
152 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains a significant number of embedded links. One of these links, https://ttraff.com/wix?keyword=raikes+bears+price+guide, points to a known malicious redirector. The PDF also exhibits characteristics of a link farm, with numerous external links, suggesting an attempt to manipulate search engine rankings or distribute malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/wix?keyword=raikes+bears+price+guide
    • https://static.usrfiles.com/ugd/97493d_9621092cd709414594d30a124a67fbaf.pdf
    • https://static.usrfiles.com/ugd/defdb4_7f402b674ec84103bf9129910748222a.pdf
    • https://static.usrfiles.com/ugd/ea78e0_9c55f55546124fb7969d76616931d761.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0df0ede68d24257857ef5e4911b38e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_7916537059cc45f88ceacf1d70a4e61d.pdf
    • https://static.usrfiles.com/ugd/b8c837_b08ff53c2f6d423aa3e356dd50584849.pdf
    • https://static.usrfiles.com/ugd/b8c837_ca91cc97376745d98c048c52bc7d3e1c.pdf
    • https://static.usrfiles.com/ugd/5ecadc_c1720b315e15439ab3eb5c8347075d6b.pdf
    • https://static.usrfiles.com/ugd/32777b_5c72a42245e04e28a547a178ef45e73f.pdf
    • https://static.usrfiles.com/ugd/e3ff21_816713435c20475bac65a6322882551c.pdf
    • https://static.usrfiles.com/ugd/b56239_2db62c3199b94680b6b76eaee12292d2.pdf
    • https://static.usrfiles.com/ugd/2274a7_59aabf4da52c4151a1617075f5edb9bc.pdf
    • https://static.usrfiles.com/ugd/0286dd_2ed0dc4ae20b4af4b3480751b0b0a77c.pdf
    • https://static.usrfiles.com/ugd/c1615c_8228eec83f5f404394dd34ad6939640d.pdf
    • https://static.usrfiles.com/ugd/b8c837_4456d4e8d39a47e0b54fa0663237473a.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_off00004be6.bin
27573a0aa31efffd7edc4521b394b979afce97b1fc6ed062221272a2d99c6f47
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BE6 5420 bytes
font_01_sfnt_off00005e58.bin
0914d3df3701515fb290d6edaa13eec78aa5b7a920a6035cec8c4efb5e5b1a11
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E58 10168 bytes