Malicious PDF — malware analysis report

Static analysis result for SHA-256 27561ac9657de9fe…

MALICIOUS

PDF

39.7 KB Created: 2020-08-20 00:11:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61a53802437232fbe7f7e306fd33963d SHA-1: cf513703a58b2c606f4b80912a99ed4262972cba SHA-256: 27561ac9657de9fe169f46e72bde53ca0c09f9517f5f1cd5e77efe821319e854
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=csi+exponential+functions+and+logarithms+answer+key'. This URL is presented within the document body as an answer key for a math topic, indicating a social engineering lure. The file also contains a large number of embedded links, many pointing to Shopify domains, but one critical heuristic flags the redirector as malicious. The primary intent appears to be redirecting the user to malicious infrastructure.

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=csi+exponential+functions+and+logarithms+answer+key
    • http://xudiwane.fishandswallowproductions.com/uploads/1/3/2/8/132816202/xobepidofeged_kusujijasus_rufedinebe.pdf
    • http://files.hannahjaggers.com/uploads/1/3/0/7/130775085/ec9279b2549.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gekisemegudifusoledo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/powers_and_exponents_worksheet_6th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0433/4986/8712/files/35239273077.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/xesenaterituxosanumen.pdf
    • https://cdn.shopify.com/s/files/1/0447/2055/4138/files/ucf_immunization_form.pdf
    • https://cdn.shopify.com/s/files/1/0435/4015/2475/files/rogazepitatuvamozominazu.pdf
    • https://cdn.shopify.com/s/files/1/0434/8893/6102/files/r_a_s_ki_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0428/4999/2870/files/9930372692.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_off00005b7d.bin
37aeea226ce179d2771c2a4e863d92f959ae97f0872b730750f79f53a9798abc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7D 5800 bytes
font_01_sfnt_off00006f25.bin
8a6d1f90fc2fd31e674df5b8ceae7250ec05a62f00295455103c90ca4ee378ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F25 10208 bytes

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