Malicious PDF — malware analysis report

Static analysis result for SHA-256 daa64c399df2f7c2…

MALICIOUS

PDF

42.9 KB Created: 2020-08-21 22:43:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af03ec666decdcf2a4349e3f55dbb2cd SHA-1: e0489d4a7169cde10ee422b991ac930efbe3f57f SHA-256: daa64c399df2f7c26fec2d81adc31a9e6db34071a6534a3202dd93beb36af240
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a Wells Fargo retirement loan payoff form, aiming to trick users into clicking it. The document body and heuristics indicate an urgency lure, suggesting the intent is to drive users to malicious infrastructure. The presence of numerous embedded links, many pointing to Shopify domains, further supports a link farm or redirection strategy.

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.
  • 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.com/pify?keyword=wells+fargo+retirement+loan+payoff+form
    • http://files.edwardcooperrealty.com/uploads/1/3/1/3/131380511/filise.pdf
    • http://rireluva.cameliaburn.com/uploads/1/3/1/6/131606165/1e420f7.pdf
    • http://files.kawarthafootclinic.com/uploads/1/3/1/6/131637308/fikidorasowumif.pdf
    • http://files.the-gym.org/uploads/1/3/0/9/130969371/fb03992fa0eee.pdf
    • https://cdn.shopify.com/s/files/1/0438/8411/8184/files/fasume.pdf
    • https://cdn.shopify.com/s/files/1/0437/1880/3607/files/84236258210.pdf
    • https://cdn.shopify.com/s/files/1/0451/7848/6933/files/77956094836.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1081/files/vurozisafuwifasoma.pdf
    • https://cdn.shopify.com/s/files/1/0438/6082/0133/files/bauhaus_latin_flipfont_apk_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/0777/8711/files/dosugorujotowozoro.pdf
    • https://cdn.shopify.com/s/files/1/0441/2529/0648/files/patidu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0940/1254/files/wurizepeduduzugazo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5797/0329/files/bowipubapibunetiluf.pdf
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/52296298247.pdf
    • https://cdn.shopify.com/s/files/1/0461/5421/9683/files/log_inequalities_worksheet.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_off00006a0f.bin
d81e91df50ba713c71740c4ea46325b0945b164cca02da4ff044637b3445c4aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0F 5336 bytes
font_01_sfnt_off00007c32.bin
955581ba1eaa9ce3e5c18b2a3e9a388462b697e6db45e3b7d585b1d663347400		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C32 10168 bytes

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