Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e08f9243886bf45…

MALICIOUS

PDF

139.4 KB Created: 2020-08-18 14:55:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ea54a3ab989e11d19dc88018e898c18 SHA-1: a02663600292b0f1a0af5b46f66ae89b638c0601 SHA-256: 6e08f9243886bf4593108c362dd423d5094fea17cdf1103551254ed6f7a0b3b0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a lure for 'ccna dumps pdf free' which redirects to a malicious URL. It also contains a large number of external PDF links, many of which point to potentially malicious or SEO-farmed content. The ML classifier strongly indicates maliciousness, and the overall structure suggests an advance-fee scam.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=ccna+dumps+pdf+free
    • http://files.optionsfishing.com/uploads/1/3/1/0/131069879/9590447.pdf
    • http://files.korea-chile.com/uploads/1/3/0/9/130968921/vaveviboxopufu.pdf
    • http://files.adamlilley.com/uploads/1/3/0/7/130738696/e7077b696.pdf
    • http://ganuli.birdvillemarchingfestival.com/uploads/1/3/0/8/130814535/7028955.pdf
    • http://lovanus.bethanylutherancushing.org/uploads/1/3/0/8/130874253/3562716.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/estrategia_corporativa.pdf
    • https://cdn.shopify.com/s/files/1/0437/5229/2513/files/zuwibezif.pdf
    • https://cdn.shopify.com/s/files/1/0438/6213/0848/files/bsc_zoology_notes_second_year.pdf
    • https://cdn.shopify.com/s/files/1/0431/6446/7357/files/lenovo_ideapad_310-_15ikb_bios.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/82747683207.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96989945255.pdf
    • https://cdn.shopify.com/s/files/1/0439/2851/8824/files/20992207046.pdf
    • https://cdn.shopify.com/s/files/1/0430/7209/4362/files/pagagokuxuvoluxajipaz.pdf
    • https://cdn.shopify.com/s/files/1/0440/9176/8984/files/advanced_financial_accounting_11th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/3547/6636/files/kawefixebi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3178/9721/files/dakovezivemive.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_off0001eae5.bin
c6face3a69b900e25f1ed51887874a305e73ed25f57bfafb365d65e388e8af13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1EAE5 5172 bytes
font_01_sfnt_off0001fc57.bin
2386088d0e462ca96fd465782df8c86ae76e2a8a43b9afa952646fe38bd29e84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1FC57 10704 bytes

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