Malicious PDF — malware analysis report

Static analysis result for SHA-256 946e4ef00117a15f…

MALICIOUS

PDF

44.6 KB Created: 2020-08-05 08:20:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a01d10f74c72b9c999a7076347b77972 SHA-1: 60fe5e65845b98fe22cb410c149738d34054b42b SHA-256: 946e4ef00117a15fc28030eba903b1f487423be0dc0e43669a5563004bf31b7b
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at `https://ttraff.cc/pify?keyword=revit+architecture+projects+pdf`. This suggests the document is designed to lure users to malicious infrastructure under the guise of providing Revit project information. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=revit+architecture+projects+pdf
    • http://files.fitnesswithdel.com/uploads/1/3/1/4/131438641/bigosof_fuleli_lufopiwasekis_zatodubenume.pdf
    • http://files.mcicomposers.com/uploads/1/3/0/7/130740521/3948781.pdf
    • http://files.neo-pro.co.uk/uploads/1/3/1/6/131606953/xadugoladowikupasum.pdf
    • https://cdn.shopify.com/s/files/1/0430/0144/6551/files/dropbox_unshare_folder.pdf
    • https://cdn.shopify.com/s/files/1/0449/4170/5384/files/ts_b._ed_entrance_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/8548/8543/files/gawezofizimepoteloda.pdf
    • https://cdn.shopify.com/s/files/1/0428/2908/6887/files/3679729521.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pizegavegip.pdf
    • https://cdn.shopify.com/s/files/1/0440/2439/7989/files/dedoxinifemumakuneki.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/nebolakax.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sejil.pdf
    • https://cdn.shopify.com/s/files/1/0431/3822/0181/files/15869779581.pdf
    • https://cdn.shopify.com/s/files/1/0434/0462/4021/files/41713929077.pdf
    • https://cdn.shopify.com/s/files/1/0431/6587/6379/files/zagijomoxilakigamakanufi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f6d.bin
b93964545e0505d6b7613049baef559d745c703515d98780ea16c7d2241c56c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6D 5356 bytes
font_01_sfnt_off000081ae.bin
5165c37e72d757ad7dae4ce7b4dfe8ae1b2e074d8f099a96516be8a70042ba2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81AE 10508 bytes

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