Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8ff852870c54bb8…

MALICIOUS

PDF

45.7 KB Created: 2020-07-28 08:30:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cbf0bc713b6d83678e14af9240f98ccc SHA-1: 5c1c175e3ebdf8e67113ab91784a05a61bb90a6d SHA-256: b8ff852870c54bb82115225aafc240432b7ebb2e1e8f07363c191f5183408d82
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains heuristics indicating it is a malicious redirector and a link farm, disguised as a 'Package pickup log template'. The primary malicious URL, 'https://ttraff.cc/pify?keyword=package+pickup+log+template', is designed to redirect users to further malicious content. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create malicious PDFs.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=package+pickup+log+template
    • http://files.makeitrainbitcoins.com/uploads/1/3/1/6/131606201/menubeguta.pdf
    • http://files.portiaresnick.com/uploads/1/3/0/7/130775471/mevuzavukekusu-zaken-jerila.pdf
    • http://files.oceansrealty.com/uploads/1/3/1/4/131409574/zemigusulusujewa.pdf
    • http://files.animollereausculpture.com/uploads/1/3/1/0/131069934/dagaxu_vumuf_bowikutujevagob_suxurid.pdf
    • http://files.therosievida.com/uploads/1/3/1/6/131636655/c32c4e6985f.pdf
    • http://files.makeitrainbitcoins.com/up
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/davewirinunumit.pdf
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/33841680426.pdf
    • https://cdn.shopify.com/s/files/1/0428/2544/9628/files/xubupofupidavodenurefafo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8320/files/77758937954.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rexalomofovuwazeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/muzoguganava.pdf
    • https://cdn.shopify.com/s/files/1/0432/7378/1411/files/25415176391.pdf
    • https://cdn.shopify.com/s/files/1/0433/4911/5029/files/sobopafa.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/salesanuzevulakil.pdf
    • https://cdn.shopify.com/s/files/1/0434/8156/3286/files/mukavugarudulivek.pdf
    • https://cdn.shopify.com/s/files/1/0432/5765/9547/files/pajanejet.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_off00007732.bin
3e7227eb59db043509989153e623821fb0e4472abcd095308273e0f019c65973
pdf-font-stream PDF embedded font (sfnt) at offset 0x7732 4820 bytes
font_01_sfnt_off000087a4.bin
1b19f6d8dfb0c5919161d92c103530ef4ece1d39cbe4ee1e631ccdf722be2f5a
pdf-font-stream PDF embedded font (sfnt) at offset 0x87A4 9996 bytes