Malicious PDF — malware analysis report

Static analysis result for SHA-256 82cd6efb55ca822e…

MALICIOUS

PDF

42.7 KB Created: 2020-08-13 07:45:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 516aee1613d471d7d4b69ba5573e5f1d SHA-1: a263279de50f5e731f8f414af2855071b3a26747 SHA-256: 82cd6efb55ca822e4eceeee3778cdec3b5a3cae4d457a3a22233b833414ce8bd
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=equidad+social+definicion+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The document body, though partially corrupted, contains the same URL and a reference to 'wkhtmltopdf', suggesting it was generated programmatically to host this malicious link. The presence of numerous other PDF links, while many resolve to benign Shopify domains, suggests a link farm strategy to obscure the malicious redirector.

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=equidad+social+definicion+pdf
    • http://files.rcaleel.com/uploads/1/3/0/7/130738918/gaxijijaz.pdf
    • http://files.meetmyshoes.org/uploads/1/3/1/4/131482892/98595d4f2a.pdf
    • http://files.fpblair.com/uploads/1/3/2/6/132695465/vilitufepedi-zeruwuzudamij-kufadaja-muxonosiwasovu.pdf
    • http://dusowebu.tarjetaverde.net/uploads/1/3/1/3/131380183/2127985.pdf
    • https://cdn.shopify.com/s/files/1/0431/2442/4870/files/5211449196.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/ledelifogomifobapuwawaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/9336/7710/files/73258221106.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/88668994107.pdf
    • https://cdn.shopify.com/s/files/1/0437/5032/6426/files/bifuligutodiloxuzezizuno.pdf
    • https://cdn.shopify.com/s/files/1/0433/3430/3912/files/24044741580.pdf
    • https://cdn.shopify.com/s/files/1/0434/4895/9142/files/55882268232.pdf
    • https://cdn.shopify.com/s/files/1/0436/8387/2921/files/diddy_kong_racing_rom.pdf
    • https://cdn.shopify.com/s/files/1/0449/5199/4536/files/ganpati_aarti_sangrah_marathi_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/koruxakanob.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wojilezufaguxulidumusad.pdf
    • https://cdn.shopify.com/s/files/1/0433/6628/5480/files/1579441772.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_off000069bd.bin
cfe9e37f73ab98da4b8169dba8579ad47230f8e297c3f43a66a89a035f0f76b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x69BD 5136 bytes
font_01_sfnt_off00007b4a.bin
278dd589493602b4d304665b03748594b8074904112af9ad1cfa0f16ad620cea
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4A 10160 bytes