Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d822cabd6fea0b…

MALICIOUS

PDF

63.1 KB Created: 2020-08-05 03:22:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33db35bb6153e96a3d176ab4919c4db7 SHA-1: fe0a103114b221b96c158a9b552b3888f5ba6cdc SHA-256: d5d822cabd6fea0b08650ddcc66a8b8ab86768d00cca76f1787f0e41cde6971d
128 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, ttraff.com. The document body and heuristics indicate a lure related to financial statements, likely to trick users into clicking the malicious link. The PDF also contains a large number of external links, many of which point to Shopify domains, suggesting a link farm for SEO manipulation or to obscure the malicious redirector. No scripts were extracted from this sample.

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.com/pify?keyword=cash+flow+statement+full+chapter+pdf
    • http://files.thecentreofthecosmos.com/uploads/1/3/2/8/132814977/6eb456ea4d.pdf
    • http://files.airdriekarate.net/uploads/1/3/1/3/131379830/73da488.pdf
    • http://files.chuckcrabbe.com/uploads/1/3/1/4/131408913/pavefujisupi-wosipevopudupu-perozo.pdf
    • http://files.custombuilddeckshamilton.com/uploads/1/3/0/9/130969710/wijupoxurese.pdf
    • http://files.cityoflathrop.org/uploads/1/3/0/9/130969448/77420d8da.pdf
    • https://cdn.shopify.com/s/files/1/0439/2920/6939/files/how_many_graham_crackers_in_a_cup.pdf
    • https://cdn.shopify.com/s/files/1/0431/5863/4658/files/zetabagilafuza.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/92052394235.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/devitutuwigorulufetiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/niwonixojifididipugup.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/79915271246.pdf
    • https://cdn.shopify.com/s/files/1/0429/7749/3146/files/penokoradofawevodowuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/7760/7324/files/32077998316.pdf
    • https://cdn.shopify.com/s/files/1/0441/2683/0744/files/rational_gaze_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/8013/9423/files/67292678536.pdf
    • https://cdn.shopify.com/s/files/1/0439/2534/0328/files/bokevamobuwokupiz.pdf
    • https://cdn.shopify.com/s/files/1/0435/8035/8811/files/75610539852.pdf
    • https://cdn.shopify.com/s/files/1/0432/6208/3232/files/30941362068.pdf
    • https://cdn.shopify.com/s/files/1/0439/5725/6350/files/xivazifubuvarex.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_off0000b188.bin
ea6f4ab105a9bee4d889371298543ccbd3dd6074291b26318b48b5848432c4fd
pdf-font-stream PDF embedded font (sfnt) at offset 0xB188 5392 bytes
font_01_sfnt_off0000c3c5.bin
01460ffd53bc927fe7ed5a80326c77f795c19b8b596897e8c59c8e63147fa4fe
pdf-font-stream PDF embedded font (sfnt) at offset 0xC3C5 13288 bytes