Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbe21adb885d3d25…

MALICIOUS

PDF

37.7 KB Created: 2020-08-19 17:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65163f630f86f69b594efdaa06957b15 SHA-1: 2db8de729b259ea3ab14aff428df9fb5c78fcfea SHA-256: bbe21adb885d3d25f53812be18fc83910fc44ef7929a9554086a1e1700b58711
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.cc. The document body, though heavily garbled, contains text related to 'DVD CD video format' and appears to be generated by wkhtmltopdf, suggesting a potential SEO-based lure 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.cc/pify?keyword=dvd+cd+video+format
    • http://files.bayridgerescuesquad.com/uploads/1/3/0/7/130775850/707819.pdf
    • http://files.paulinedodd.com/uploads/1/3/0/7/130775021/sonokorap-vitugefufike-zezeko-wuviwe.pdf
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/tezegi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5139/2922/files/columbia_capital_allocation_aggressive_fact_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/9164/8929/files/tanatologia_cristiana.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/davumitifere.pdf
    • https://cdn.shopify.com/s/files/1/0431/0650/0769/files/bse_odisha_10th_class_english_grammar_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/9699/0105/files/13079819887.pdf
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/pelobaravekojowixi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/81243334253.pdf
    • https://cdn.shopify.com/s/files/1/0432/6365/6099/files/libgen_io_down.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/bazorutopaxamodelazarif.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_off0000574e.bin
f264821a70d4f854b945edbecc769bf398371bce362cb9156783491266a057f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x574E 5016 bytes
font_01_sfnt_off0000684c.bin
0ff1d440d386ff83505450e3ffd65b5907da41faeebc41bc89b12afbb5bc610e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x684C 10152 bytes

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