Malicious PDF — malware analysis report

Static analysis result for SHA-256 2978dddd81dfd325…

MALICIOUS

PDF

51.6 KB Created: 2020-08-16 17:57:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5989d9f3ddfb280f0e5775fe08109108 SHA-1: d7c6494760f05bf6997665532a9e57dbaacab2b7 SHA-256: 2978dddd81dfd32524b67f403f5330ce170280b8d4977a21e4c14b8e47a76b54
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL https://ttraff.cc/pify?keyword=application%252F+x-+www-+form-+urlencoded+c+example, indicating it points to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, with cdn.shopify.com being a dominant host, suggesting an attempt to obscure the true destination or engage in link farming. The document body contains garbled text and the suspicious URL, reinforcing the malicious intent.

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=application%252F+x-+www-+form-+urlencoded+c+example
    • http://files.12chemistry.com/uploads/1/3/1/4/131437660/befud_xozipowu.pdf
    • http://files.cooperartfulhealing.com/uploads/1/3/1/3/131398091/bumevepulalaxo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7218/2685/files/varupavis.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8375/files/52639864163.pdf
    • https://cdn.shopify.com/s/files/1/0432/6863/6834/files/pentair_intelliflo_variable_speed_pump_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/6193/6282/files/49671662122.pdf
    • https://cdn.shopify.com/s/files/1/0430/4466/7553/files/stay_hungry_stay_foolish_by_rashmi_bansal.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/63571535624.pdf
    • https://cdn.shopify.com/s/files/1/0433/5602/9093/files/80505779917.pdf
    • https://cdn.shopify.com/s/files/1/0430/3313/3209/files/nawedewu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/acidosis_metabolica_neonatal.pdf
    • https://cdn.shopify.com/s/files/1/0434/0105/2310/files/71529815556.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e18.bin
a26328142e3c00d8d68559a344bc005c382d84eb388d1b1058921b4209fac93d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E18 5340 bytes
font_01_sfnt_off0000703e.bin
9a9fd7f62658fafddbc1c885ac7b93aeefab274ba5eecc50eb572843d7299d13
pdf-font-stream PDF embedded font (sfnt) at offset 0x703E 2640 bytes
font_02_sfnt_off00007bcd.bin
e4392c3c13f18c42617292b65db816b122d7ddf0da60a53ffa36ab9abcd8181a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCD 15260 bytes
font_03_sfnt_off0000abd5.bin
bcfecb9fde4b74e4a2b692e15caf305b2988a1cfe4c6386614002e38d35feb86
pdf-font-stream PDF embedded font (sfnt) at offset 0xABD5 16168 bytes