Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e2649ef46afbdbf…

MALICIOUS

PDF

40.8 KB Created: 2020-08-06 12:52:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad4179757ddcfb37450d30107b3383e6 SHA-1: bff01def5b07582c0c6755c5074e68b8c5067f6c SHA-256: 4e2649ef46afbdbfdecd23ef293c0122a13926102738ab102ec5f3f7d7d53d48
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is further obfuscated by a large number of SEO-optimized PDF links hosted on Shopify. The document body text and embedded URLs suggest a lure for a fake 'Adobe PDF reader installer'. The presence of a visual download button reinforces this social engineering tactic. The primary malicious URL is 'https://ttraff.com/pify?keyword=adobe+pdf+reader+installer+for+windows+7'.

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=adobe+pdf+reader+installer+for+windows+7
    • http://files.celestinevessel.com/uploads/1/3/2/6/132695582/4426998.pdf
    • http://files.ikargb.co.uk/uploads/1/3/1/4/131409170/c416f2d8c877.pdf
    • http://files.callowayfootball.com/uploads/1/3/0/8/130813042/zijogowimabuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/6948/0866/files/47361627001.pdf
    • https://cdn.shopify.com/s/files/1/0440/4704/0662/files/pobunivutoxexivewaligino.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/gurumitutadasavejedupov.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4978/files/penebidolezakokojag.pdf
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/73823980225.pdf
    • https://cdn.shopify.com/s/files/1/0437/1218/4474/files/75741999290.pdf
    • https://cdn.shopify.com/s/files/1/0433/0936/7461/files/48910286252.pdf
    • https://cdn.shopify.com/s/files/1/0446/6583/1577/files/curso_de_adobe_premiere_pro_cc_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/xirazu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/adjectives_and_adverbs_tests.pdf
    • https://cdn.shopify.com/s/files/1/0429/6058/4870/files/icy_veins_resto_shaman.pdf
    • https://cdn.shopify.com/s/files/1/0431/6640/0673/files/nuwujo.pdf
    • https://cdn.shopify.com/s/files/1/0443/1472/2460/files/christiaan_barnard_biography.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_off00006127.bin
4821d543baeaba87c855b9ef3a2864dfa0f3a361934bb92a64a02b231d460304
pdf-font-stream PDF embedded font (sfnt) at offset 0x6127 5336 bytes
font_01_sfnt_off0000736f.bin
eb57a0b94169f154baef7b72fd0f46338f57ce06eccc0421b6801829727ee54a
pdf-font-stream PDF embedded font (sfnt) at offset 0x736F 10132 bytes