Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5e98fb616bf327f…

MALICIOUS

PDF

58.6 KB Created: 2020-08-30 14:02:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc454f27a86ff1efc79dddd5e8109a65 SHA-1: b01ae789c861f44ff53f882e0ed42cd7c9939cc1 SHA-256: e5e98fb616bf327fa13b4124c2cd951d46f7767617ce51e8d20291f102c5a8c0
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a redirector URL, which is a common tactic for delivering malicious payloads or leading users to phishing sites. The document body, though heavily obfuscated, contains the same redirector URL. The presence of a large number of external PDF links suggests a link farm designed to manipulate search engine results or distribute malware through a chain of redirects.

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=anand+no+garbo+gujarati+lyrics+download
    • https://cdn.shopify.com/s/files/1/0463/6717/8907/files/android_10_one_ui_2._0.pdf
    • https://cdn.shopify.com/s/files/1/0432/8754/3964/files/nesazebe.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/security_bank_loan_application_form.pdf
    • https://static.usrfiles.com/ugd/b8c837_58f3ba407e864286a1bee67dd5d679d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_a92775fc629d4b208f11de6e92dc3dbe.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5721da99c474acd9b377d6813ebcd16.pdf
    • https://cdn.shopify.com/s/files/1/0449/5589/3928/files/jitipevoxafedonitelepo.pdf
    • https://cdn.shopify.com/s/files/1/0458/3089/7827/files/gafogexub.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/2160286751.pdf
    • https://cdn.shopify.com/s/files/1/0428/2132/0870/files/nagerefijokobijuxave.pdf
    • https://static.usrfiles.com/ugd/6116da_8e7b4b8cf5e54397a2b122546d2093df.pdf
    • https://static.usrfiles.com/ugd/0c268c_f7d1548c418a4669afa4fa039791aa68.pdf
    • https://static.usrfiles.com/ugd/b8c837_2ee03e23c7834b4badc25baf5bd52fd3.pdf
    • https://static.usrfiles.com/ugd/dd4472_57088061602146e78c61f66037048cc6.pdf
    • https://static.usrfiles.com/ugd/b8c837_3631edaa9a6d474ca5ad62975c84114c.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008fa9.bin
712f9fc2a958bca557a4479c57890cd3d3f6d8e7dbb04d4459d634f87791ff7f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA9 5504 bytes
font_01_sfnt_off0000a280.bin
bc7700a48cf44bdfb183888ea0b208b81fefe8296fa28d279656c5f4594f0d45
pdf-font-stream PDF embedded font (sfnt) at offset 0xA280 6768 bytes
font_02_sfnt_off0000b893.bin
9342b532ba1309ebe1e2d0c13e04058f7d7b742a6e33283cbaec4a11d1a32c80
pdf-font-stream PDF embedded font (sfnt) at offset 0xB893 11328 bytes