Malicious PDF — malware analysis report

Static analysis result for SHA-256 d01acad855404b89…

MALICIOUS

PDF

34.4 KB Created: 2020-08-31 11:10:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ef1c4495cd5ff8e05d5d70452ac1e9e SHA-1: bca8ce84e98368b8cd38de5702db35b52232361e SHA-256: d01acad855404b899bb0a2b33986331048d06ca1cb67a6a71866caad71102c28
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The file also contains a large number of embedded links, flagged as a PDF link farm, which is a common tactic for SEO poisoning to drive traffic to malicious sites. No scripts were extracted from this sample.

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/wix?keyword=demon+free+mp3+download
    • https://static.usrfiles.com/ugd/834936_5d0f83fcd67b406bad07178edd6701b7.pdf
    • https://static.usrfiles.com/ugd/a44510_8ec023b191404144bb8dec002afcbbff.pdf
    • https://static.usrfiles.com/ugd/b8c837_85b683329cbf49af976bf0801d980a5d.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3766/files/zinirapupekurubizo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/vowinu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9659/5870/files/viwedekezubav.pdf
    • https://cdn.shopify.com/s/files/1/0460/2632/6175/files/xupojiririlokidob.pdf
    • https://cdn.shopify.com/s/files/1/0431/4516/7008/files/rotis_serif_bold_font_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/6987/4082/files/wifopasoxuz.pdf
    • https://cdn.shopify.com/s/files/1/0427/6181/4172/files/livros_hernandes_dias_lopes.pdf
    • https://cdn.shopify.com/s/files/1/0437/1139/8041/files/xijixebaxodob.pdf
    • https://cdn.shopify.com/s/files/1/0433/3761/3461/files/50335446843.pdf
    • https://cdn.shopify.com/s/files/1/0434/9673/4880/files/83659528791.pdf
    • https://cdn.shopify.com/s/files/1/0434/3801/4616/files/72711263602.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_off000049e0.bin
468f81fc377d7700dd51f0e6eb34d2633bfa59c54925f0e74be965db2412bb3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49E0 5264 bytes
font_01_sfnt_off00005bc8.bin
07a32f5378b0c0869453e0b0fcd93727b9e2b4deab9a44b32d0e07fa9af1f6b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC8 9764 bytes

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