Malicious PDF — malware analysis report

Static analysis result for SHA-256 33f7331f08d92e35…

MALICIOUS

PDF

47.5 KB Created: 2020-08-01 16:03:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 021355deb962d025c66059f2d68e5e37 SHA-1: 3b272766aca2bf42f72aff011169a4312bab599f SHA-256: 33f7331f08d92e35128971b6a4ec78a16f8217756826474e542a9618b03c40d1
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though obfuscated, includes the URL 'https://ttraff.com/pify?keyword=fifa+15+contract+expiry', suggesting a lure to a malicious site. The presence of many external PDF links further indicates a link farm or redirection strategy, likely intended to lead users to malicious content or phishing pages.

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/pify?keyword=fifa+15+contract+expiry
    • http://files.mytravel.guide/uploads/1/3/2/6/132680855/7003142.pdf
    • http://files.heritagepumps.com/uploads/1/3/1/3/131397973/c0f0be5edb.pdf
    • http://files.counterearthgrid.com/uploads/1/3/1/3/131381640/9528878.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/6638/3768/files/37258802567.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/94759254063.pdf
    • https://cdn.shopify.com/s/files/1/0429/0550/1852/files/ruxefanojozinuras.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/degitarakeketi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9558/8005/files/93745407666.pdf
    • https://cdn.shopify.com/s/files/1/0440/6696/3621/files/jikipiwewukowanimebivavaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/8181/0595/files/11915607491.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovaje.pdf
    • https://cdn.shopify.com/s/files/1/0431/8461/9680/files/21899919058.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/rutojenotoloxat.pdf
    • https://cdn.shopify.com/s/files/1/0437/8561/7570/files/weather_underground_columbus_ohio.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f08.bin
b3bb0f7e033c7fbb022504b39f57f045c592cfd3b5ad7ea2a1e98e112cfad5be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F08 4888 bytes
font_01_sfnt_off00007fbf.bin
84dfd0f64eb1eb8d98bff57ab7d3043ddfdfe367f71f6773ea51bde541cd7c99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FBF 10336 bytes
font_02_sfnt_off0000a33c.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA33C 4324 bytes

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