Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5de470077a74fee…

MALICIOUS

PDF

36.0 KB Created: 2020-08-03 02:01:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e859f247f2b90eeec5201a5f63b9a16 SHA-1: e0b948238682f55f63609c9268a073f73b7abc45 SHA-256: f5de470077a74fee13a1c7daab72e7202ec32c158a689f47ed47a835acdc5da9
128 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one heuristic specifically identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that, when combined with the 'SE_INVOICE_LURE' heuristic, suggests a social engineering pretext. The primary malicious URL identified is https://ttraff.ru/pify?keyword=adp+check+stub, which likely serves as a gateway to further malicious content.

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.ru/pify?keyword=adp+check+stub
    • http://files.getfitwithida.com/uploads/1/3/0/7/130738871/779580.pdf
    • http://files.sandalwood4455.com/uploads/1/3/1/1/131164231/vosam_xefewazizojona_wozexire.pdf
    • http://files.ingeermusic.com/uploads/1/3/1/8/131856632/0a9ed10f0f4d.pdf
    • http://files.mobileweldingservice.co/uploads/1/3/0/7/130740522/c53351a.pdf
    • https://cdn.shopify.com/s/files/1/0430/6901/4165/files/eileen_wellstone_snopes.pdf
    • https://cdn.shopify.com/s/files/1/0437/4921/2309/files/36691457247.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/goxanemadalobakilowolo.pdf
    • https://cdn.shopify.com/s/files/1/0440/0345/9230/files/59423389267.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/23084243428.pdf
    • https://cdn.shopify.com/s/files/1/0432/9252/4702/files/rutamebe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1498/7669/files/11204506359.pdf
    • https://cdn.shopify.com/s/files/1/0438/8985/2571/files/kitchenaid_food_processor_manuals.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65545430121.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1261535930.pdf
    • https://cdn.shopify.com/s/files/1/0432/2849/6036/files/97816294050.pdf
    • https://cdn.shopify.com/s/files/1/0437/7716/3416/files/kavajetagotafazajeve.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_off00004f56.bin
e57be372169ab867af705cca6a3da1a8bac537bf54bbfdc16884aad0b394b0d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F56 5016 bytes
font_01_sfnt_off00006061.bin
11234a47f2e24067b78524f788dc70b7f87bbb8650e71b440d57abaffd529165
pdf-font-stream PDF embedded font (sfnt) at offset 0x6061 10248 bytes