Malicious PDF — malware analysis report

Static analysis result for SHA-256 d80c0788b96fd6d6…

MALICIOUS

PDF

47.2 KB Created: 2020-08-02 13:22:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9805cc4a12e62071b86aa0c90aa19ba SHA-1: b770f65a32e16cc5701a9b126951565d07d53acd SHA-256: d80c0788b96fd6d611d6053adaef80003d95509db2f1b883456955750217a8be
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a "Pmbok guide pdf" to lure unsuspecting users. The document body and embedded URLs strongly suggest a phishing or scam attempt. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=pmbok+guide+pdf
    • http://files.mountainmarinade.com/uploads/1/3/1/3/131383998/zumomowunuxinaza.pdf
    • http://files.sevycampos.com/uploads/1/3/1/4/131452878/xavibaj.pdf
    • http://burusat.toejar.com/uploads/1/3/2/6/132681559/lukibagovarubi_borodurogekurix_kabobaxumawozaw.pdf
    • http://files.klacscotland.com/uploads/1/3/1/1/131163512/lofevit.pdf
    • http://files.stevenwojtowicz.com/uploads/1/3/1/4/131452740/mubinori.pdf
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/rusegegipeforijavegozot.pdf
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/lejafif.pdf
    • https://cdn.shopify.com/s/files/1/0439/3353/2315/files/pokemon_colosseum_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6816/files/nonelox.pdf
    • https://cdn.shopify.com/s/files/1/0434/1969/7310/files/59252898317.pdf
    • https://cdn.shopify.com/s/files/1/0432/2885/6477/files/15835315797.pdf
    • https://cdn.shopify.com/s/files/1/0439/9045/0334/files/4692527814.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8758/files/22328733040.pdf
    • https://cdn.shopify.com/s/files/1/0431/9802/1793/files/jagage.pdf
    • https://cdn.shopify.com/s/files/1/0432/2633/3351/files/nosumaginirita.pdf
    • https://cdn.shopify.com/s/files/1/0438/9994/5112/files/robes_of_arcana_pattern.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • https://lnkd.in/erzUS_D
    • 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_off000067a5.bin
b64b53ed2c9e224c058a70bb516f291a0c7ea5dc46b2d89deb9f25667b0c1c0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67A5 5276 bytes
font_01_sfnt_off00007991.bin
e083d1abbcd8f9032ddcaf9deeab736bfbf05ad7311781a4362933564ba06ff9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7991 5048 bytes
font_02_sfnt_off00008ab9.bin
2695a1b6500e716404a80f4a713c33ccd2bfa1490bad30ca8101310b48b9ad93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB9 10388 bytes

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