Malicious PDF — malware analysis report

Static analysis result for SHA-256 c740bb7c8097b0d6…

MALICIOUS

PDF

49.6 KB Created: 2020-08-07 04:56:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63ca3b558137c6727191859aa45b8c23 SHA-1: 81a0235ef45a15c23e47dda00c9a330c7df7a276 SHA-256: c740bb7c8097b0d669a1f2bc4f832f05775a42661b2fdc0ab057594748dfafe0
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=numbers+in+english+1+to+1000+in+words+pdf'. This suggests the document's primary purpose is to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains references to the redirector URL and other Shopify links, likely part of a link farm to improve search engine ranking for malicious content.

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=numbers+in+english+1+to+1000+in+words+pdf
    • http://files.sungleedesign.com/uploads/1/3/1/3/131379578/5869362.pdf
    • http://files.makerdan.com/uploads/1/3/2/7/132740415/5765796.pdf
    • http://files.pictoursportugal.com/uploads/1/3/1/3/131383743/befenisefox-gifunufadalu-dizaval.pdf
    • http://zuwijum.gracebaptistny.org/uploads/1/3/0/7/130739777/vodikelolelofoxibiz.pdf
    • http://files.mitercontracting.com/uploads/1/3/1/1/131163635/pipopinenete-komisupivug.pdf
    • https://cdn.shopify.com/s/files/1/0437/7218/2685/files/argent_dawn_rep_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/9634/2695/files/66844351854.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3090/files/4141521760.pdf
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/york_furnace_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/8380/9443/files/osrs_best_place_to_cannon.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riginijulu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1045/6726/files/61494101768.pdf
    • https://cdn.shopify.com/s/files/1/0435/8592/9375/files/luwevof.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/abdominal_trauma.pdf
    • https://cdn.shopify.com/s/files/1/0434/7192/9496/files/38818175904.pdf
    • https://cdn.shopify.com/s/files/1/0433/8765/0211/files/dulejatavuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/7504/2457/files/jojudimuteveratawu.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_off00006421.bin
3c2dd00e406ed7f8ebf3dbb828dff76819fae97d92be24e9a0948f67f35902cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6421 5640 bytes
font_01_sfnt_off0000773f.bin
a39bbb879dd61d0ae1fa585dacde23e02ea8003d910c6f4d03a43d49e0f1b3a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x773F 14588 bytes
font_02_sfnt_off0000a48c.bin
d78d7cc1a68daa951b4fbccbcfb906d5a08ad384f187125596154666a45abe72
pdf-font-stream PDF embedded font (sfnt) at offset 0xA48C 16060 bytes