Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3f227018e7bb622…

MALICIOUS

PDF

35.1 KB Created: 2020-08-26 07:23:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eeb38e8aea417258e60dae547ceb434f SHA-1: fca7f144145e2fcfcb64e57a3355aa56e02dd783 SHA-256: e3f227018e7bb6223d9b8a55ed118577f434b5835a54e9cced3d43fbac5ea570
130 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm designed for SEO manipulation. One prominent link, 'https://ttraff.ru/pify?keyword=digimon+world+3+free+download+for+android', suggests a lure for game downloads. The presence of a visual download button further supports the deceptive nature of the document. The primary malicious redirector link is the most critical IOC.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=digimon+world+3+free+download+for+android
    • http://nuveki.kirstenlaplume.com/uploads/1/3/1/4/131482992/2899356.pdf
    • http://files.safna.com/uploads/1/3/2/6/132680853/9128350.pdf
    • http://files.saudiref.com/uploads/1/3/2/8/132814589/jakumarovifinok.pdf
    • http://files.europeanwoodworkers.com/uploads/1/3/2/3/132302871/0300dfd2cf.pdf
    • https://cdn.shopify.com/s/files/1/0428/6119/9526/files/dota_auto_chess_app.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/5582457261.pdf
    • https://cdn.shopify.com/s/files/1/0432/9357/3284/files/13897457532.pdf
    • https://cdn.shopify.com/s/files/1/0435/6341/7759/files/ketiwufegazurid.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/vorodarurijujexusevumow.pdf
    • https://cdn.shopify.com/s/files/1/0433/4921/3349/files/passport_renewal_nz_forms.pdf
    • https://cdn.shopify.com/s/files/1/0432/6660/5209/files/33327952131.pdf
    • https://cdn.shopify.com/s/files/1/0439/4395/2539/files/dulcimer_sheet_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/51911383976.pdf
    • https://cdn.shopify.com/s/files/1/0428/9911/2095/files/42995659694.pdf
    • https://cdn.shopify.com/s/files/1/0434/6442/5634/files/mifuj.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_off00004a51.bin
09eb723de92d909e5151d5f02c6d4e56d33e8a14211c3346156a255c3b9c41a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A51 5304 bytes
font_01_sfnt_off00005c5b.bin
d94e94f06665d3f3d2e46506c801fbbb7adadb3ea2028a0dd1bb8b9f806f190f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C5B 10288 bytes