Malicious PDF — malware analysis report

Static analysis result for SHA-256 92d96b6f7c646b43…

MALICIOUS

PDF

142.3 KB Created: 2020-07-30 02:52:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30f8389f8d234441b2b2349eedfe6b42 SHA-1: 86d9982d36c5695e1c97fe3fbe0f70acd62852d1 SHA-256: 92d96b6f7c646b4303d5dd132fa07bcdd12f4132219c67af32da68c0cf2db1a9
170 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. It also includes a large number of external PDF links, many hosted on Shopify, suggesting a link farm for SEO manipulation or traffic redirection. The document body, though heavily obfuscated, contains text related to 'clinical pharmacy mcqs', likely a lure. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic indicates the document may instruct the user to copy and paste content into a command-line interface, further suggesting a malicious intent to execute commands or download further payloads.

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.
  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=clinical+pharmacy+mcqs+with+answers+pdf
    • http://files.scfcivicauditorium.com/uploads/1/3/1/4/131438056/momuviji.pdf
    • http://files.kobanuniverse.net/uploads/1/3/2/7/132710624/b3c2d2598da5.pdf
    • http://files.laptcycling.com/uploads/1/3/0/7/130775373/radazotetevuwib-tapovilabazob-parivujev.pdf
    • http://files.tommytrenchard.com/uploads/1/3/2/6/132682868/2604567.pdf
    • http://files.patrickmfay.com/uploads/1/3/2/3/132302764/3801249.pdf
    • https://cdn.shopify.com/s/files/1/0437/4924/5082/files/laguzowosudulivo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5293/3019/files/fogexivewonovolikomunulir.pdf
    • https://cdn.shopify.com/s/files/1/0434/3817/8471/files/kogadurenokunuzoboguxovo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9187/7283/files/puvapofopovokol.pdf
    • https://cdn.shopify.com/s/files/1/0435/9503/8877/files/50854250809.pdf
    • https://cdn.shopify.com/s/files/1/0433/8394/7427/files/15646654363.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54440827626.pdf
    • https://cdn.shopify.com/s/files/1/0438/3644/0726/files/nabawebubapibudunemenaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/3607/3366/files/67217239084.pdf
    • https://cdn.shopify.com/s/files/1/0434/5479/1846/files/32912510598.pdf
    • https://cdn.shopify.com/s/files/1/0435/8035/8815/files/lewuzupabi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5254/7739/files/97231591951.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001dbaa.bin
fe180b0ae2d427f439809157a31873e93310ff86d6a9fcf8fb428ef107155ccb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1DBAA 5416 bytes
font_01_sfnt_off0001edea.bin
c1077207c4af585fe3c0db6864055b7d181f5b0a964838a0903a92534a214548		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1EDEA 12104 bytes
font_02_sfnt_off000215f7.bin
7851fffef52e473cda661ca30cfe3df526f3fed1248a67fb10825064e0e4480f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x215F7 16084 bytes

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