Malicious PDF — malware analysis report

Static analysis result for SHA-256 fed87af341345268…

MALICIOUS

PDF

45.6 KB Created: 2020-08-30 06:52:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4697f907463604d331a7cac545e6e35c SHA-1: 2a7bacadb3333be27e82b6495522eeb0604cfc39 SHA-256: fed87af3413452689db8de6f6a36a0499699b69d65466633b9260c894efc09a2
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM. One of these links, https://ttraff.cc/wix?keyword=aaa+camping+guide+florida, is flagged as a malicious redirector. The document body appears to be malformed or obfuscated, but the presence of these links strongly suggests a malicious intent, likely related to SEO spam or redirecting users to malicious sites.

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/wix?keyword=aaa+camping+guide+florida
    • https://cdn.shopify.com/s/files/1/0439/2566/7995/files/gerupobiwaxupufe.pdf
    • https://cdn.shopify.com/s/files/1/0438/2657/7565/files/960616559.pdf
    • https://cdn.shopify.com/s/files/1/0438/5295/5810/files/alfredo_soares_bora_vender.pdf
    • https://cdn.shopify.com/s/files/1/0444/7302/4679/files/low_back_strengthening_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0428/1060/5735/files/rezumubupojasogezarizuged.pdf
    • https://cdn.shopify.com/s/files/1/0431/8501/2900/files/railway_rrb_group_d_form_check.pdf
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/93325956290.pdf
    • https://cdn.shopify.com/s/files/1/0436/5837/9417/files/cornerstone_chords_e.pdf
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/biblia_para_jovenes.pdf
    • https://static.usrfiles.com/ugd/b8c837_e75a61ade84b4443b4883b0f28c711f6.pdf
    • https://static.usrfiles.com/ugd/b8c837_47b75c2ec8b442cbbc60aa9968ffe8a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_104ba1b2b00b40cab1152d3abcee4455.pdf
    • https://static.usrfiles.com/ugd/6cf392_70fd75dfc6be4c70bb0a05e2dcab2922.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_off0000740a.bin
ecf0225573611bd17c7e522f9c88135d98cec54ea75228cf95e018263d2d37b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x740A 5284 bytes
font_01_sfnt_off000085eb.bin
fe500b6dc013584d676645796b4d8ad52278aee7890fb2163bf66b6c8215ce71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85EB 10580 bytes

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