Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ffaae7615a62315…

MALICIOUS

PDF

54.8 KB Created: 2020-08-11 18:03:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fd222dc9e45fdd1e26536826c864c50 SHA-1: 6ac2ae657ae74fa017c0200c86c403d9ce9f980a SHA-256: 2ffaae7615a62315c50eb712a12d3cb2118f1858f7a748ce6cdbee04b773d7a5
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDFs hosted on various domains. One of the primary links, 'https://ttraff.ru/pify?keyword=types+of+cohesive+devices+and+examples+pdf', is identified as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites.

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=types+of+cohesive+devices+and+examples+pdf
    • http://files.slicediaries.com/uploads/1/3/1/6/131606260/ritarijivomomur.pdf
    • http://files.instantcarappraisal.com/uploads/1/3/0/9/130969744/ed16ae8a8f253.pdf
    • http://files.sabatinomangini.com/uploads/1/3/1/6/131637255/tasij-mubutaz-popop.pdf
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/vevuwed.pdf
    • https://cdn.shopify.com/s/files/1/0433/6300/8664/files/ambrosia_maritima.pdf
    • https://cdn.shopify.com/s/files/1/0432/5697/1432/files/dagoloxewupebufilo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6911/1448/files/basic_electronics_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2009/9488/files/15746276339.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/pobuwodibuvoviruri.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baludugosutagaxoreforodul.pdf
    • https://cdn.shopify.com/s/files/1/0431/5768/4375/files/2373317334.pdf
    • https://cdn.shopify.com/s/files/1/0433/0546/8068/files/mimisikosovamomemog.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/naseletogixi.pdf
    • https://cdn.shopify.com/s/files/1/0447/0836/4444/files/asset_accounting_full_configuration_in_sap.pdf
    • https://cdn.shopify.com/s/files/1/0431/1410/2941/files/fopekep.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/libidurekatomanazavevufi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008a96.bin
65086a2dc8e655810f5b6991da1391949fc8a5a28ea8da0503385341ea4edcd0
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A96 5184 bytes
font_01_sfnt_off00009c1b.bin
b200b7abbe0cdcd15a4b6e6647429047ebbc46da5cca9f4dedef64f1ba6eb56e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C1B 10352 bytes
font_02_sfnt_off0000bf87.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xBF87 4324 bytes