Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bdbc6a44f638d8b…

MALICIOUS

PDF

42.6 KB Created: 2020-08-07 14:52:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c05a5414c896d33dbbac49f4438ff2dd SHA-1: 9327c020c3eb2bfc58cc01448eb76c7c1d14e1b1 SHA-256: 7bdbc6a44f638d8b2101b0d099de5e65c19b512517b452915059efe45da97b7d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a high number of embedded links, many of which point to a link farm designed to host SEO-optimized PDF documents. One of the primary links directs to a known malicious redirector, 'ttraff.com', which is likely used to obscure the final destination of the malicious payload. The document body itself contains the URL that is likely the initial lure, disguised as a business plan.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=auto+repair+service+business+plan+pdf
    • http://files.procommtheatretroupe.com/uploads/1/3/0/7/130739684/xavin_buvanikerobudon_tokovuxexezugu.pdf
    • http://files.mkbergh.com/uploads/1/3/2/7/132710630/joxubulejide_tuzimugesufixiv_minelopi_goxosuvexak.pdf
    • http://files.pathsforwholeness.com/uploads/1/3/2/6/132695575/jeroranupim_firuvo_nonapabiwoz.pdf
    • http://files.richlytakenphotography.com/uploads/1/3/2/6/132682819/25d90415afb0.pdf
    • http://files.hasslilyhashim.com/uploads/1/3/1/3/131384429/88d73.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0984/files/tumunubude.pdf
    • https://cdn.shopify.com/s/files/1/0432/0293/6992/files/texas_special_warranty_deed_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/8502/7746/files/48226088676.pdf
    • https://cdn.shopify.com/s/files/1/0438/4574/6838/files/goroxafiwafutalipopopa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0115/9585/files/sowamebejo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2526/7877/files/92768684570.pdf
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/98330989118.pdf
    • https://cdn.shopify.com/s/files/1/0432/1103/0683/files/13783007439.pdf
    • https://cdn.shopify.com/s/files/1/0445/5625/5396/files/at_t_cl4940_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/8850/1143/files/nakozabonag.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/25625826455.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/16110449024.pdf
    • https://cdn.shopify.com/s/files/1/0429/3486/1991/files/fififusopepeluwi.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_off00006671.bin
58f77ba9117d37a1a677e75cc4e9251fbcf1266a75ae1f6ea01056aa7f78460e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6671 5340 bytes
font_01_sfnt_off000078a7.bin
4f4af00cf393459a353546de8f64ef3ceced6c9bc5ee01916469e2e2010b590f
pdf-font-stream PDF embedded font (sfnt) at offset 0x78A7 10656 bytes