Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b0674e5655016e…

MALICIOUS

PDF

37.4 KB Created: 2020-08-31 19:59:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0dfb34d9536c0e0388b2ded9f1a87649 SHA-1: 0e446107a123c6b24ec01fa725efad08a6eb61c2 SHA-256: 60b0674e5655016ee8d316dcfb0a84b522a3e793aa870c6fe808797ae6cb032e
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised as a Fortigate datasheet. The document body, though heavily obfuscated, contains the target URL and references to other PDFs, suggesting a link farm or redirection scheme. The presence of embedded URLs and the ML classifier's high confidence indicate malicious intent, likely to redirect users to further malicious content.

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=fortigate+300d+datasheet+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_7f165b50ab104c9c8197b1a3a659bd3d.pdf
    • https://static.usrfiles.com/ugd/8acad3_30cdc691c72045f5a7bbe4092d35d08d.pdf
    • https://static.usrfiles.com/ugd/5b5da7_27e7e71bcb7a4819b36e02dfc81d020b.pdf
    • https://static.usrfiles.com/ugd/a59130_d74ab501e4b541a1a72603b1dab9801a.pdf
    • https://cdn.shopify.com/s/files/1/0430/8906/8185/files/95054229060.pdf
    • https://cdn.shopify.com/s/files/1/0431/3346/8839/files/9995524933.pdf
    • https://cdn.shopify.com/s/files/1/0432/9573/5976/files/cassava_planting_guide.pdf
    • https://static.usrfiles.com/ugd/b5472a_8ee85a1cd3d7422e9dde6b1e8214962a.pdf
    • https://static.usrfiles.com/ugd/6da380_dbc270d357c84b139a053ef2de7c6d97.pdf
    • https://static.usrfiles.com/ugd/c0fca2_08c534ee942548578ffeaef5ef075485.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gokibaleginasesomedusuj.pdf
    • https://cdn.shopify.com/s/files/1/0437/5789/5829/files/86059002801.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niroduwo.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_off00005621.bin
dad85b82c72a032695c3a6467f8b07495738c107bc7cd33dc40a7b7c24e99825
pdf-font-stream PDF embedded font (sfnt) at offset 0x5621 5532 bytes
font_01_sfnt_off000068e5.bin
8ac2c04bd245679a34eb4894aaa670a049a73965ab4e082db88814da1f16896f
pdf-font-stream PDF embedded font (sfnt) at offset 0x68E5 9652 bytes