Malicious PDF — malware analysis report

Static analysis result for SHA-256 4985f4f60f511e6c…

MALICIOUS

PDF

48.7 KB Created: 2020-08-31 04:32:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76b87dc29c0cb33e63edcdbe26df469f SHA-1: be181e066f2c0c643c9314a647007d125b553144 SHA-256: 4985f4f60f511e6cc8bdb78ae6b635fc0ddb0bbbb8e022f4793f21f5434dc45e
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=material+science+callister+pdf+free+download'. Additionally, it exhibits a PDF link farm heuristic, with numerous links to shopify.com domains, suggesting an attempt to obscure the true malicious destination or to appear as a legitimate content aggregator. The presence of a visual download button lure further supports the malicious intent of directing users to external content.

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.com/wix?keyword=material+science+callister+pdf+free+download
    • https://cdn.shopify.com/s/files/1/0432/8023/6702/files/minnesota_multiphasic_personality_inventory_test.pdf
    • https://cdn.shopify.com/s/files/1/0434/1415/9521/files/71434355495.pdf
    • https://cdn.shopify.com/s/files/1/0434/2831/5293/files/verazebuwipesogizel.pdf
    • https://cdn.shopify.com/s/files/1/0435/3071/5288/files/95293565985.pdf
    • https://cdn.shopify.com/s/files/1/0429/3243/7151/files/vekonimadetezabedexakug.pdf
    • https://static.usrfiles.com/ugd/7f46b5_a9d9835f039f4029bd87ab5adda67453.pdf
    • https://static.usrfiles.com/ugd/33a2e4_e6f9120870264fb7a035b8516f6d735a.pdf
    • https://cdn.shopify.com/s/files/1/0437/4816/3733/files/kubugigokedero.pdf
    • https://cdn.shopify.com/s/files/1/0429/2083/7287/files/ditobujetijopepazikepud.pdf
    • https://cdn.shopify.com/s/files/1/0435/6449/9105/files/zogizos.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7875/files/nodexafawoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/3314/0127/files/68777818655.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_off00006acd.bin
33912b63e9b0371b1929a6471241258e25b7e5bc72c40e3abc17796a9777ffa8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACD 5244 bytes
font_01_sfnt_off00007cbb.bin
49f1c345582212729590e0456707ca92d3838aef8cba26fbcaa28f8c5b0a0640
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CBB 2116 bytes
font_02_sfnt_off00008686.bin
059bee1b424c53b4bfc41fc7ae96150f89f92689d31f7694afd14f4889418f89
pdf-font-stream PDF embedded font (sfnt) at offset 0x8686 15208 bytes