Malicious PDF — malware analysis report

Static analysis result for SHA-256 db814a087fbe7f23…

MALICIOUS

PDF

40.8 KB Created: 2020-08-12 10:16:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75a4516139ce882088a16581b212a2ba SHA-1: d2050871a9177b5031fc23185aa493b17e30d283 SHA-256: db814a087fbe7f235e1fbad463b7b04ec02f107c5a03ab3f879522457945a827
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body also contains a lure for 'today thina thanthi news paper tamil pdf download', which is likely a social engineering tactic to encourage clicks. The PDF also hosts a link farm with 16 external PDF links, many hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute further malicious content. 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.
  • 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.com/pify?keyword=today+thina+thanthi+news+paper+tamil+pdf+download
    • http://files.trufflefarmsc.com/uploads/1/3/1/3/131384098/situtato_duwidil_liladuwajuza_napuvezilanu.pdf
    • http://files.oxfordstation.pl/uploads/1/3/1/4/131453022/rotozaninirafaban.pdf
    • http://wijij.thewitchsgarden.com/uploads/1/3/1/6/131636948/bijawu-lusakutomimuzid-vekugosuroja.pdf
    • http://files.versesrecords.com/uploads/1/3/1/4/131452872/1962339.pdf
    • https://cdn.shopify.com/s/files/1/0440/6090/1528/files/rufobexejipimujadisive.pdf
    • https://cdn.shopify.com/s/files/1/0431/5817/5908/files/16230993190.pdf
    • https://cdn.shopify.com/s/files/1/0438/1406/0189/files/42894107358.pdf
    • https://cdn.shopify.com/s/files/1/0433/9436/7649/files/7830806068.pdf
    • https://cdn.shopify.com/s/files/1/0433/2647/2345/files/advantages_of_eclectic_approach.pdf
    • https://cdn.shopify.com/s/files/1/0437/7850/6909/files/85696409544.pdf
    • https://cdn.shopify.com/s/files/1/0438/0252/5856/files/scert_sams_odisha_gov.pdf
    • https://cdn.shopify.com/s/files/1/0434/7405/9424/files/gepubototativeg.pdf
    • https://cdn.shopify.com/s/files/1/0437/7850/6909/files/eminem_recovery_songs.pdf
    • https://cdn.shopify.com/s/files/1/0430/8775/7461/files/25261866007.pdf
    • https://cdn.shopify.com/s/files/1/0435/8694/5187/files/286946629.pdf
    • https://cdn.shopify.com/s/files/1/0431/8344/0030/files/pedibaxa.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_off000059ad.bin
082f63310fdf6bc4ceb05ae5c15846f8b22d6e5a4a7e5a0e34f2f9e9a704c1bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x59AD 5424 bytes
font_01_sfnt_off00006c0a.bin
ac4b5cd94d082f475051b75d9d5671ca405ff137ffe718e8316f74afc107257a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0A 13172 bytes