Malicious PDF — malware analysis report

Static analysis result for SHA-256 576cf463cc83912c…

MALICIOUS

PDF

47.3 KB Created: 2020-08-03 11:28:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1247e18e4ea5bf8a68674e7b4ec08bc SHA-1: 959e81166fb0421e7f6b161dee019d80be01782b SHA-256: 576cf463cc83912c600d53e1fc044e1c32af9067affe5690be3b9297c877dd5d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, a technique often used for SEO poisoning or to redirect users to malicious sites. One of these links points to a known malicious redirector, ttraff.com, which is highly suspicious. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

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=southern+africa+map+pdf
    • http://files.baddogarts.org/uploads/1/3/2/7/132710763/ratixuge-vikimuzutad.pdf
    • http://files.badgrrlbrenda.com/uploads/1/3/0/7/130776073/ruzorumakobas_zugoxuxodajuj_xadimadoropaf.pdf
    • http://files.togetherforthelongrun.org/uploads/1/3/0/7/130775231/dijubovu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/96989837381.pdf
    • https://cdn.shopify.com/s/files/1/0433/5196/5855/files/sifefabilokixuja.pdf
    • https://cdn.shopify.com/s/files/1/0430/9513/0266/files/31749277357.pdf
    • http://files.membership.editmysite.com/uploads/1/3/1/4/131437532/14a2d67b.pdf
    • https://cdn.shopify.com/s/files/1/0431/6371/3695/files/tajafumurelavimapijeja.pdf
    • https://cdn.shopify.com/s/files/1/0431/3671/2861/files/sumixesaf.pdf
    • https://cdn.shopify.com/s/files/1/0437/8624/0162/files/xakejejexajavozugakuzitav.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/500_days_of_summer_quotes.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/lowes_zion_crossroads.pdf
    • https://cdn.shopify.com/s/files/1/0429/5124/5987/files/vovulujobeporu.pdf
    • https://cdn.shopify.com/s/files/1/0440/1607/4902/files/pibagatamelagofatafixo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6867/0620/files/62794033827.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_off00007b4e.bin
85c03c453f244d16caf6d8356fa9b5a043a439440a2156ce310aed972aa86d78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4E 5288 bytes
font_01_sfnt_off00008d21.bin
652078a9bece1fc9ccc9607d7a82705bcebd6fe64c645055f454e5e97a51c6be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D21 10356 bytes

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