Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ce868f45caab794…

MALICIOUS

PDF

42.0 KB Created: 2020-08-30 01:43:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49dba0096c366bf9eb63e75524f05e02 SHA-1: b6eb043b5a28ee47af6c71405c269aef9138f155 SHA-256: 6ce868f45caab794df92c9a31e1430e06c24a923d42d7711adddf32de4e4e959
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded links, a common tactic for SEO link farms and redirecting users to malicious sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL https://ttraff.cc/wix?keyword=catering+business+plan+pdf as malicious. The document body, though partially corrupted, suggests a lure related to a 'catering business plan'. The ML classifier also strongly indicates maliciousness.

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.cc/wix?keyword=catering+business+plan+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/7598fa_05ed0540ac004400b2a18b546f5a9ebf.pdf
    • https://static.usrfiles.com/ugd/576447_929c0d80d36f4d51b15f4a7cd8fd25a2.pdf
    • https://static.usrfiles.com/ugd/b8c837_e845e7b508094b5ab3c06c99b5bda7c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_22a7c7319b0e456a8a00843f11f10d95.pdf
    • https://static.usrfiles.com/ugd/0baf77_54e2260a37494354bc034f150f72f15b.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/fifilo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3215656586.pdf
    • https://cdn.shopify.com/s/files/1/0430/9050/9977/files/54542725410.pdf
    • https://cdn.shopify.com/s/files/1/0429/8542/2997/files/neurotransmisor_adenosina.pdf
    • https://cdn.shopify.com/s/files/1/0431/2190/1729/files/tetanuxoju.pdf
    • https://static.usrfiles.com/ugd/b8c837_80d20ce9cf1a4bcd8874c8c13a56331b.pdf
    • https://static.usrfiles.com/ugd/b8c837_0677136015d9489eac8d7ecfd4b1d9ae.pdf
    • https://static.usrfiles.com/ugd/b5472a_1f7a5e2230f544b9ae07d4e064f9f8cc.pdf
    • https://static.usrfiles.com/ugd/b8c837_216199422f274026a51ee88479231818.pdf
    • https://static.usrfiles.com/ugd/9b5f63_81e4fbd5b6194dcd980aed94ad15e9f7.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006682.bin
863ae67e4b4144fa6896d0fd269cb5929afc488622f4d50b3883cf55937b599b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6682 5256 bytes
font_01_sfnt_off00007867.bin
c42180c6177c8e90c2af77c00dfb0bc31f8066edcfc8a72c53970ecb1e824878
pdf-font-stream PDF embedded font (sfnt) at offset 0x7867 10524 bytes