Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ecc6fb60e850dca…

MALICIOUS

PDF

42.1 KB Created: 2020-07-28 12:55:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 218b5ac87f753ef6214b5c8b54dd9754 SHA-1: d1edf83a4d563a16e2c027ba771ae3a3117fbb8d SHA-256: 3ecc6fb60e850dca49cd5dd4fc303ef5db2a7a2ec23ee3f4fb305a2e0f226e7c
130 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. It also exhibits a PDF link farm, with many links pointing to Shopify domains, likely for SEO poisoning. The presence of a 'download button' lure further supports a malicious intent to trick users into clicking the embedded malicious URL.

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.cc/pify?keyword=calendar+2018+template+pdf
    • http://files.dudleyneighbors.org/uploads/1/3/1/8/131871786/femewog-linurimu-xasifixizajagi.pdf
    • http://files.whshuskymusic.com/uploads/1/3/1/4/131406960/gujetigenanaz-rifumibikafe.pdf
    • http://files.millbrookrotarydirectory.com/uploads/1/3/0/7/130775846/d99ea.pdf
    • http://files.fourwallsnoceiling.com/uploads/1/3/1/4/131409098/65fcd9e.pdf
    • http://files.creativerecyclingworks.com/uploads/1/3/1/0/131070212/bcd4c47.pdf
    • http://files.creativerecyclingworks
    • https://cdn.shopify.com/s/files/1/0427/9857/9879/files/rejadamugasikokop.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44758106853.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rabilividobakomitunaxizug.pdf
    • https://cdn.shopify.com/s/files/1/0429/5108/2143/files/55362809649.pdf
    • https://cdn.shopify.com/s/files/1/0429/8076/9951/files/8208964901.pdf
    • https://cdn.shopify.com/s/files/1/0431/1685/5453/files/67933074228.pdf
    • https://cdn.shopify.com/s/files/1/0431/0630/4166/files/31519590562.pdf
    • https://cdn.shopify.com/s/files/1/0431/5054/0964/files/tojenodamazopom.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/83542144078.pdf
    • https://cdn.shopify.com/s/files/1/0434/7537/0136/files/sukanek.pdf
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/guroxotadufiroxebal.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_off0000682d.bin
0ad2c581ff5293b479edcafa9293a536f95afaf357ba28e42fa2374d6c737749
pdf-font-stream PDF embedded font (sfnt) at offset 0x682D 5180 bytes
font_01_sfnt_off000079b5.bin
369dd4cc7e6ba3b1bbcfbebbcfacba24474e17ac140b974e1e1478952163c012
pdf-font-stream PDF embedded font (sfnt) at offset 0x79B5 9820 bytes