Malicious PDF — malware analysis report

Static analysis result for SHA-256 f557e5376ce93996…

MALICIOUS

PDF

43.9 KB Created: 2020-08-04 02:18:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4396c095227caa515a3af4474d5c0608 SHA-1: 4e138a1ade25e05877ed8cd28e8456fcc0c912b3 SHA-256: f557e5376ce939968aaa501f0c492ad0b0216853c8193a8170dbc99f10d94619
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.003 Windows Command Shell T1059.001 PowerShell T1204.002 Malicious File

This PDF document contains a mass of external links, many pointing to Shopify domains, and one critical link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=ansible+commands+pdf' and also instructs the user to copy and paste commands into a shell, likely to execute a malicious payload. The heuristic firings indicate the document is designed to lure users into visiting malicious URLs and to trick them into revealing sensitive recovery secrets or private keys.

Heuristics 5

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=ansible+commands+pdf
    • http://files.russmillssigns.com/uploads/1/3/0/7/130775565/cfb65b9.pdf
    • http://xejopolu.penangfloorball.com/uploads/1/3/0/9/130969489/nekapesit.pdf
    • http://files.geraldinepilgrim.com/uploads/1/3/2/8/132815346/6780435.pdf
    • http://files.malagpr.com.au/uploads/1/3/1/4/131411024/nitonepogos-taleligono.pdf
    • https://cdn.shopify.com/s/files/1/0435/1390/5311/files/kutobaligumavawepanotixo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9348/1889/files/ultimate_mortal_kombat_3_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/zokizowapototu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/bixexumelexulumem.pdf
    • https://cdn.shopify.com/s/files/1/0436/2679/1075/files/menejojarukokinoninefiki.pdf
    • https://cdn.shopify.com/s/files/1/0431/4388/9058/files/39143304013.pdf
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/jegod.pdf
    • https://cdn.shopify.com/s/files/1/0432/3567/2219/files/826713909.pdf
    • https://cdn.shopify.com/s/files/1/0438/8978/7048/files/90168246314.pdf
    • https://cdn.shopify.com/s/files/1/0437/6199/1841/files/how_to_change_dpi_in_illustrator.pdf
    • https://cdn.shopify.com/s/files/1/0440/3062/3894/files/wowagelupodixizaxosama.pdf
    • https://cdn.shopify.com/s/files/1/0433/3607/3366/files/78565405537.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/valorero.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_off00006407.bin
03cb49458ddb9646f079ded877febff7a6ec936bce30e8279ba202286fe03f29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6407 5332 bytes
font_01_sfnt_off00007615.bin
7e4ea19e4e52a3b52006823fddfa9605a37431fdfa23d60e49834ec54e0335a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7615 13992 bytes

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