Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2fe108c5f8c44be…

MALICIOUS

PDF

44.6 KB Created: 2020-07-14 09:47:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64eb3c6e86501933557f463bcae1af7c SHA-1: 5faf3abb3700de5a64cce754a9b801aafe4c6a40 SHA-256: a2fe108c5f8c44be41e551a2519801c83f80e9a927d142c4bd393c2b1b69865a
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, a common tactic for SEO link farms, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, appears to be related to 'Fpga xilinx tutorial pdf', suggesting a lure to attract users interested in technical content. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of a link to malicious infrastructure.

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/wb?keyword=fpga%20xilinx%20tutorial%20pdf
    • http://files.radiorodney.com/uploads/1/3/0/8/130874298/3217108.pdf
    • http://files.mymoonmalas.com/uploads/1/3/2/6/132681316/f8954ce2662.pdf
    • http://files.smalltalktherapy.co.nz/uploads/1/3/0/9/130969693/senipu.pdf
    • http://files.hannahleatherbury.com/uploads/1/3/0/8/130873791/cc7d5.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/dapoziwomaxiwajojegela.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19189676900.pdf
    • https://cdn.shopify.com/s/files/1/0429/1110/5183/files/75517793685.pdf
    • https://cdn.shopify.com/s/files/1/0431/5955/2155/files/895492321.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bekikelazipilexujewa.pdf
    • https://xikivogazud.files.wordpress.com/2020/07/1414062284.pdf
    • https://xutifik.files.wordpress.com/2020/07/43800895628.pdf
    • https://volapuzigu.files.wordpress.com/2020/06/70047247504.pdf
    • https://fuwaloked.files.wordpress.com/2020/07/36420763711.pdf
    • https://cdn.shopify.com/s/files/1/0429/7719/8229/files/fotelibopujazasifamewe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85583151980.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xaxigeruver.pdf
    • https://cdn.shopify.com/s/files/1/0427/8249/0791/files/wunufefozovobisevulam.pdf
    • https://cdn.shopify.com/s/files/1/0433/4066/0891/files/93305864015.pdf
    • https://cdn.shopify.com/s/files/1/0431/2770/1655/files/migekepasut.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41732402988.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_off000072ed.bin
bae5b7fb2e63fe78a8684ee35f7d70d5041b99166173da5a25aecbe0786610bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x72ED 4820 bytes
font_01_sfnt_off00008356.bin
7b47c795495df33e379d7491c884ccbee332d130c926aae90f45008c80600efb
pdf-font-stream PDF embedded font (sfnt) at offset 0x8356 9900 bytes