Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc12a1b82f65d6b9…

MALICIOUS

PDF

52.3 KB Created: 2020-08-04 16:49:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 840a27cd61010c7d27de16792333cbc7 SHA-1: 68eddaa344689798001edaafa9f8a3c14f1af564 SHA-256: dc12a1b82f65d6b93ddb973a4dad8c0a881534c73201112763f219d292ec5d75
128 Risk Score

Malware Insights

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

The PDF document contains embedded links that are identified as malicious redirectors. One such link, 'https://ttraff.cc/pify?keyword=hdfc+securities+nps+form+pdf', is presented in the document body and is flagged as a critical indicator. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The presence of invoice/payment lure language further supports the malicious intent.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=hdfc+securities+nps+form+pdf
    • http://files.ausdart.com/uploads/1/3/1/4/131453065/duximivimom_xupuxifi_boredit.pdf
    • http://files.pltma.com/uploads/1/3/0/7/130739601/5168586.pdf
    • http://files.legacyniagara.com/uploads/1/3/0/7/130738852/jesikiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/bodybuilding_anatomy.pdf
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/69688925739.pdf
    • https://cdn.shopify.com/s/files/1/0431/0053/6986/files/62874660966.pdf
    • https://cdn.shopify.com/s/files/1/0432/5412/0606/files/nolafuma.pdf
    • https://cdn.shopify.com/s/files/1/0429/6772/8281/files/tibareme.pdf
    • https://cdn.shopify.com/s/files/1/0432/4445/4051/files/giliwapejolafibaxu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2256/5032/files/58263522876.pdf
    • https://cdn.shopify.com/s/files/1/0437/1929/5130/files/dilesegatobotumelulonenis.pdf
    • https://cdn.shopify.com/s/files/1/0435/7816/3359/files/29227044955.pdf
    • https://cdn.shopify.com/s/files/1/0434/6177/1430/files/vurab.pdf
    • https://cdn.shopify.com/s/files/1/0434/9558/8005/files/78965726976.pdf
    • https://cdn.shopify.com/s/files/1/0430/6868/6497/files/82594240356.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_off00008fb2.bin
80521bbb6a0e158443a05ce104f2171c89358af503ff4191c4d129c1c8859d16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FB2 5020 bytes
font_01_sfnt_off0000a0b4.bin
e55babdea9d6290d4f881367be67a00e3efeb581c77581457435ad81e1f69e53		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0B4 10404 bytes

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