Malicious PDF — malware analysis report

Static analysis result for SHA-256 5456c9683615484e…

MALICIOUS

PDF

50.7 KB Created: 2020-08-23 13:13:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7129d9c0890f4b74125f04448f5f01bd SHA-1: 52bbe40f9d07550de42973e749e4937e516514c1 SHA-256: 5456c9683615484e3788eee5d1d2cbce0a66af8817908b4e9cc226869ae167b5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1059.003 Windows Command Shell

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a user manual title and includes the malicious URL. Another heuristic indicates the document instructs the user to copy or paste content into a shell, suggesting an attempt to trick the user into executing commands. The primary malicious URL is ttraff.com, which is used in conjunction with a keyword that mimics a legitimate document search.

Heuristics 4

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=braillesense+polaris+user+manual
    • http://files.tpinw.com/uploads/1/3/2/6/132683328/pibij.pdf
    • http://kekevim.superfloor.net/uploads/1/3/2/3/132302780/7431569.pdf
    • https://cdn.shopify.com/s/files/1/0433/3414/0072/files/man_booker_prize_2017.pdf
    • https://cdn.shopify.com/s/files/1/0429/7854/1722/files/xonumu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3388/files/74026605545.pdf
    • https://cdn.shopify.com/s/files/1/0429/2195/1391/files/code_of_honor_alan_gratz_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/9907/8299/files/57379645311.pdf
    • https://cdn.shopify.com/s/files/1/0433/7503/4524/files/53376901213.pdf
    • https://cdn.shopify.com/s/files/1/0430/3516/4835/files/cat_2020_question_paper_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8482/4222/files/bleeding_out_imagine_dragons_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0437/0936/6427/files/certificado_leed.pdf
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/bacaan_doa_sholat_dhuha.pdf
    • https://cdn.shopify.com/s/files/1/0437/0841/6165/files/vabufewevexokeziletexa.pdf
    • https://cdn.shopify.com/s/files/1/0433/4711/6197/files/56678762029.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_off00008867.bin
c647bf8a8798494493f414a8f06ac98cf5849a2bb68ad2ed592fdd523ad34d18
pdf-font-stream PDF embedded font (sfnt) at offset 0x8867 5016 bytes
font_01_sfnt_off00009956.bin
4104f27c1fbc879a8a38db7d683221ca3521404504caee748c5416ca2a5dc0cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x9956 10852 bytes