Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d8b50dd732fc07…

MALICIOUS

PDF

46.2 KB Created: 2020-08-05 05:52:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fa8092a1342645dd094e5dfbf6e8a01 SHA-1: befb36b421556b4fbd55f55f299515124fa3c6d8 SHA-256: c5d8b50dd732fc07f27df45a7466a0551386bad8e52281d2235304008ae9ed23
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, disguised as IELTS preparation material. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, and the PDF_SEO_LINK_FARM heuristic indicates a large number of similar links are present. The document body, though heavily obfuscated, contains the target URL, suggesting a lure to a malicious redirector.

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=ielts+general+writing+task+1+samples+pdf
    • http://files.ccpdiscoveryschool.com/uploads/1/3/1/1/131164440/kubegal.pdf
    • http://files.blanketbc.org/uploads/1/3/0/8/130874501/757181f49a.pdf
    • http://files.churchofstcolman.org/uploads/1/3/0/7/130776168/e66ac2.pdf
    • http://files.tell-consulting.com/uploads/1/3/2/7/132712451/7066238.pdf
    • https://cdn.shopify.com/s/files/1/0428/3616/4774/files/kukajuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/adam_smith_theory_of_economic_development.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8665/files/89340977185.pdf
    • https://cdn.shopify.com/s/files/1/0430/9296/7581/files/abdominal_muscle_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0440/7086/2998/files/fivuzamunaron.pdf
    • https://cdn.shopify.com/s/files/1/0435/9254/8515/files/sql_concatenate_strings.pdf
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/96447715294.pdf
    • https://cdn.shopify.com/s/files/1/0434/4381/4556/files/68782587877.pdf
    • https://cdn.shopify.com/s/files/1/0429/4203/8182/files/3668577451.pdf
    • https://cdn.shopify.com/s/files/1/0436/2531/6514/files/32153331997.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1637/files/voseletazeba.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/will_fivem_get_me_banned.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riginijulu.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_off00007153.bin
3867f56157f28b87057e5b5404d0578dfc1a54515c77176766653fd0b10f3905		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7153 5508 bytes
font_01_sfnt_off00008416.bin
daba495f9332be372e2d317180ff6bc9f7495c11d5418029869f98f19c71dd92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8416 13912 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.