Malicious PDF — malware analysis report

Static analysis result for SHA-256 101ae989017ffd81…

MALICIOUS

PDF

44.7 KB Created: 2020-08-07 19:03:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c46de7e10a972598516d046a2f68903 SHA-1: 1e3d2f2019e5001eb8874d00b43fa7be8a987042 SHA-256: 101ae989017ffd81d3453d3be8a0144a36ff33960199a5081dd385e85fa3b6d4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to manipulate search engine results, directing users to a malicious redirector. The ML classifier strongly indicated maliciousness, and the embedded URLs, particularly the one pointing to ttraff.cc, are associated with malicious redirection. The document body, though partially corrupted, contains keywords related to academic topics to lure victims.

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/pify?keyword=teoria+de+abraham+maslow+jerarquia+de+las+necesidades+pdf
    • http://mojawa.emirhrnjic.com/uploads/1/3/1/0/131070109/jivokazupufijoveleni.pdf
    • http://files.shopbrickroad.com/uploads/1/3/1/4/131437625/9065848.pdf
    • http://files.goldengloryauthentics.com/uploads/1/3/0/7/130739204/ebc6dea.pdf
    • http://panulon.claussenequipment.com/uploads/1/3/0/8/130874038/wezemekufuzoxik.pdf
    • http://files.baldfantaseasphynx.com/uploads/1/3/1/3/131379406/nirewaf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9639/9269/files/becker_cpa_books.pdf
    • https://cdn.shopify.com/s/files/1/0433/7745/9363/files/57593783495.pdf
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/headway_beginner_test_booklet_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0437/4996/5978/files/96094072483.pdf
    • https://cdn.shopify.com/s/files/1/0432/8590/5576/files/airway_breathing_circulation_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/44440646220.pdf
    • https://cdn.shopify.com/s/files/1/0434/7386/2808/files/85795632036.pdf
    • https://cdn.shopify.com/s/files/1/0428/5032/0543/files/wogiwabemojukiruruzojuzul.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/vuwiwojimisabuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/0970/3062/files/5917379995.pdf
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/dezofu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8179/files/puderibajalilinipukibeve.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_off00006ce6.bin
93d07bd1e56d9d6c25c21f04c57fc42a30f919d91b605b0c00c13a204aaac9e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE6 5780 bytes
font_01_sfnt_off00008078.bin
91e0c39dbbe14f87a7e1d147c5038bab82ba0f9296f449e411ae64a505009819		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8078 10724 bytes

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