Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4f069f7e186e6d1…

MALICIOUS

PDF

40.4 KB Created: 2020-08-15 06:42:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f882553f03094e5e0f6187620021d71 SHA-1: 7816a8a8ab3741c48d2efceb874e52f01c38eeaa SHA-256: c4f069f7e186e6d126dd8235086b60fe0c08026159f944555c025c3fe6a444fb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged for containing a large number of external links, a technique often used for SEO manipulation or to host malicious content. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=pictionary+words+hard+pdf', is identified as a malicious redirector. While the document body contains garbled text, the presence of numerous links, including the malicious redirector, strongly suggests a malicious intent related to link farming or redirection.

Heuristics 3

  • 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.
  • 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=pictionary+words+hard+pdf
    • http://files.pastelsocietyofsoutheasttexas.org/uploads/1/3/0/8/130873903/e6039889f42da4.pdf
    • http://files.airbrushinggourds.com/uploads/1/3/0/7/130740053/leruxi_sesomapakepoda_zomisabebuxux_megero.pdf
    • http://files.tabersafehaven.ca/uploads/1/3/1/4/131453144/nokawuwutosozo-xeraz-zijununozezitod-kegonamawi.pdf
    • http://pekupa.amarieimages.com/uploads/1/3/0/8/130873951/xelaroguremokatewano.pdf
    • http://files.metaburger.com/uploads/1/3/1/4/131406736/setezol_ninasijaru_lapifurasopi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7755/7660/files/15982905473.pdf
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/automating_the_boring_stuff_with_python_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3219/0876/files/foxadoruba.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/gelut.pdf
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/13235470177.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/boxalovonewewibugof.pdf
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/pipuzepibasowivowafuwudaf.pdf
    • https://cdn.shopify.com/s/files/1/0440/7489/3477/files/32683261436.pdf
    • https://cdn.shopify.com/s/files/1/0440/1099/5862/files/780519851.pdf
    • https://cdn.shopify.com/s/files/1/0446/5518/1987/files/adobe_reader_exe_latest_version.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_off00006046.bin
3d429cbe8f7c840c4d2cd51921cb7ba3b7ce73504133695e977fe4eb0d1ad028		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6046 5408 bytes
font_01_sfnt_off000072b5.bin
9e6df9a7cb8edebb3a61d07a60f3711dad43aab1ede1713af9f73f08ef803dba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72B5 10060 bytes

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