Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e062742e62700b0…

MALICIOUS

PDF

41.2 KB Created: 2020-08-03 03:16:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 563afa4ee7aee6631a0a8cbff42d3358 SHA-1: 38daa51dbecb61b762b63d71f3c23c11df0e37d2 SHA-256: 3e062742e62700b0a86531fce687680d02df8d41b11ee1d8c2257b719c9209de
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download for Adobe Flash Player. This link points to 'ttraff.ru', which is known for malicious redirection. The document also contains a large number of external PDF links, many hosted on Shopify, likely for SEO manipulation to improve search engine ranking for malicious content. The presence of a visual download button further supports the lure.

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=adobe+flash+player+filehippo
    • http://files.thebetterbrasspipe.com/uploads/1/3/2/7/132740218/daf3e1d8396c143.pdf
    • http://files.florinafit.com/uploads/1/3/2/6/132695530/lapixokitoxufig-vumuvubiled.pdf
    • http://files.childprotectionresponsecenter.org/uploads/1/3/1/3/131378791/2052782.pdf
    • http://files.michellelitv.com/uploads/1/3/1/0/131071312/878ae314.pdf
    • http://files.treeseedonline.com/uploads/1/3/0/9/130969298/wenibogapeb.pdf
    • https://cdn.shopify.com/s/files/1/0440/5808/3493/files/da_form_5172_r_fillable.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rafudegilezenetizaxesuvos.pdf
    • https://cdn.shopify.com/s/files/1/0437/7922/7810/files/12894101499.pdf
    • https://cdn.shopify.com/s/files/1/0437/6576/0151/files/nevusudenezidiwuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/1218/5499/files/gelibo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5950/3519/files/ruxoge.pdf
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/75271207832.pdf
    • https://cdn.shopify.com/s/files/1/0437/2594/7029/files/53982803035.pdf
    • https://cdn.shopify.com/s/files/1/0436/1856/6306/files/dowewaxizapodojaruwuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/0269/9681/files/24934714287.pdf
    • https://cdn.shopify.com/s/files/1/0446/2844/3299/files/acronis_universal_restore.pdf
    • https://cdn.shopify.com/s/files/1/0440/8783/6837/files/37645962628.pdf
    • https://cdn.shopify.com/s/files/1/0432/9517/8902/files/fadixadaxidaputuwafabapax.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_off0000631d.bin
e98011bef1826deb44e80595cd393c7d0a5a69e41334548ca0558a9d452c1199
pdf-font-stream PDF embedded font (sfnt) at offset 0x631D 5360 bytes
font_01_sfnt_off00007558.bin
a8cac807c7e34b77630724aa9986ff843eadb9599201ba9dba6f22c849c0afb9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7558 10108 bytes