Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ccb40bc309013b9…

MALICIOUS

PDF

39.6 KB Created: 2020-08-29 14:17:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb616d115647be2a8467e0b1ac7e9361 SHA-1: 154eaf022edaf03e9e996c55abb86c79d8e0f6cb SHA-256: 4ccb40bc309013b905f52e3dd417b65193e5ca9b65f58baec3cb77f2bc8217e2
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify. The document body contains a call-to-action phrase and the primary malicious URL, suggesting a lure to download content that ultimately leads to the ttraff.ru redirector. No scripts were extracted from this sample.

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.ru/wix?keyword=2010+vw+tiguan+owners+manual
    • https://cdn.shopify.com/s/files/1/0436/0631/1070/files/vadimimirumuzivariju.pdf
    • https://cdn.shopify.com/s/files/1/0433/1978/7688/files/treatment_depression.pdf
    • https://cdn.shopify.com/s/files/1/0432/5035/2296/files/critical_race_theory_in_education.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7746/files/50195957700.pdf
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/49235235122.pdf
    • https://cdn.shopify.com/s/files/1/0437/9174/5185/files/assembly_chart_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0433/2008/2590/files/68774328805.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/free_d_d_5e_monster_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mizamolapo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42778697636.pdf
    • https://cdn.shopify.com/s/files/1/0432/1850/1799/files/holes_louis_sachar_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/2860/3295/files/tesifexodomosis.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_off00005be5.bin
4a3d6850a46a9ce387b0ad2466080acf53c5b85e9e26b8d1e0c92c0d4fb84b99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE5 5388 bytes
font_01_sfnt_off00006e36.bin
3b0bd638d27ff24e6b32b000856f89ec06400e733b292468ba7eb91daf1b337d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E36 10480 bytes

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