Malicious PDF — malware analysis report

Static analysis result for SHA-256 b95e104d27c9879a…

MALICIOUS

PDF

41.6 KB Created: 2020-08-10 09:53:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61fed086a6118431b670a15a7932f8d3 SHA-1: 586377266fff76c4178523f85998bd9a6d14bf4c SHA-256: b95e104d27c9879a6f41c5450e445365c99719d0aa7b300fd0c3ac11e388aa84
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=cuore+nero+amabile+giusti+pdf+download', which is flagged as a malicious redirector. This suggests the primary intent is to redirect the user to a malicious site, likely for phishing or to download further malware. The file also exhibits characteristics of a link farm, with numerous external PDF links.

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.cc/pify?keyword=cuore+nero+amabile+giusti+pdf+download
    • http://files.meridiancyclingclub.com/uploads/1/3/2/6/132681443/295483.pdf
    • http://files.revenuerampup.com/uploads/1/3/1/1/131164456/suzejoj_tevome_lovuxu_gobabixogitek.pdf
    • http://files.creativesheetmetalworks.com/uploads/1/3/0/7/130775109/3150699.pdf
    • http://files.dkgwv.org/uploads/1/3/0/8/130814043/dafadoku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52733892229.pdf
    • https://cdn.shopify.com/s/files/1/0434/3670/3900/files/doom_and_destiny_advanced_walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0430/3182/2485/files/37296517153.pdf
    • https://cdn.shopify.com/s/files/1/0432/8862/5302/files/87204650583.pdf
    • https://cdn.shopify.com/s/files/1/0437/6110/7105/files/norowawizulabavidugukupu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4384/7328/files/taylormade_r1_adjustment_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/bci_battery_group_size_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/7007/0690/files/rukapupufimatuse.pdf
    • https://cdn.shopify.com/s/files/1/0438/3493/3408/files/39071768491.pdf
    • https://cdn.shopify.com/s/files/1/0437/6995/4456/files/balancing_equations_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6420/5216/files/the_life_of_samuel_johnson_by_james_boswell.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_off00006139.bin
d3ae222df495ffda61321bc275f625e0d89c94f962e489f94748091783c956a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6139 5500 bytes
font_01_sfnt_off000073de.bin
d78dda612d55c9d2a5957bdb57fc8a0286706a524cd459e896861fbc4ebc6859		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73DE 11052 bytes

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