Malicious PDF — malware analysis report

Static analysis result for SHA-256 c58cf95f83ec661b…

MALICIOUS

PDF

35.4 KB Created: 2020-08-30 17:48:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 014cb2b70667bb64a83b8e173f551fb4 SHA-1: e4d8e1561233d1f1f6c0f5e40b848c3f2eec2422 SHA-256: c58cf95f83ec661ba3b90d47467504424b3b2b7f8044c54257225b2a019c29e7
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector at https://ttraff.cc/wix?keyword=poe+labyrinth+switch+puzzle. The document body, though heavily obfuscated, contains this URL and other benign-looking Shopify links, suggesting a lure to a malicious site. The ML classifier strongly supports the malicious verdict.

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/wix?keyword=poe+labyrinth+switch+puzzle
    • https://cdn.shopify.com/s/files/1/0434/6085/3912/files/shakespeare_quotes_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/6873/5140/files/rimawomedul.pdf
    • https://cdn.shopify.com/s/files/1/0429/2381/9164/files/livre_bilingue_arabe_franais_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/39683087173.pdf
    • https://cdn.shopify.com/s/files/1/0432/6388/5472/files/76227542069.pdf
    • https://cdn.shopify.com/s/files/1/0430/8788/8551/files/helvetica_font_dafont.pdf
    • https://cdn.shopify.com/s/files/1/0435/4329/8207/files/camwhores_bypass_reddit.pdf
    • https://static.usrfiles.com/ugd/5b5da7_19dac75943054936867b123d44c271cd.pdf
    • https://static.usrfiles.com/ugd/5b9a87_5693ca6984114fb6827c6620805c16f4.pdf
    • https://static.usrfiles.com/ugd/93c935_54e4f5cb873545e588c7b8596267738e.pdf
    • https://static.usrfiles.com/ugd/b8c837_8b7f2b0c200b401ea62610955f037079.pdf
    • https://static.usrfiles.com/ugd/33a2e4_a76b10840522423c990d63a7d309883b.pdf
    • https://static.usrfiles.com/ugd/b8c837_c2b40a6c92a148beb51f13c8c48f486a.pdf
    • https://static.usrfiles.com/ugd/8b2c09_191d38ec1dc54850a6dab46f2d532284.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5ee06e698d144a9bf690d5043493013.pdf
    • https://static.usrfiles.com/ugd/affaa6_ca1ad228c59145c88c5f17ec1f9d6772.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_off00004c87.bin
57aabab047c8f0203363a08d1c58db55d5e69f1e670a9910cad8de3b61f362f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C87 5404 bytes
font_01_sfnt_off00005efa.bin
f78eb7a91f3ade57678bc4404108554767c8a4dee668466e4480c3dc2a0f5985		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFA 9880 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.