Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5127a68192e31d2…

MALICIOUS

PDF

48.0 KB Created: 2020-08-30 14:20:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5328ff75b192bfc3cb0d50f4299060d3 SHA-1: 07dde47b4b44383388c56bea3d3ad0c0095b0752 SHA-256: c5127a68192e31d2ea2e459f403da32ea5b0b313c51bfc9f4669209342432a03
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to a known malicious redirector. It also exhibits characteristics of a PDF link farm, with numerous external links, many hosted on shopify.com. The document body, though heavily obfuscated, contains a URL that matches the redirector identified by the heuristic, suggesting the primary intent is to drive traffic to this malicious link under the guise of providing video downloads.

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.me/wix?keyword=naanum+rowdy+dhaan+video+songs+free+download
    • https://cdn.shopify.com/s/files/1/0437/6903/6962/files/litigupezijegegasebozed.pdf
    • https://cdn.shopify.com/s/files/1/0432/0011/8943/files/antropologia_social_y_cultural.pdf
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/75667220743.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/42324192519.pdf
    • https://cdn.shopify.com/s/files/1/0430/7098/0245/files/pharmacologie_de_l_appareil_respiratoire.pdf
    • https://cdn.shopify.com/s/files/1/0431/3271/5163/files/story_of_an_hour.pdf
    • https://cdn.shopify.com/s/files/1/0437/7473/8593/files/miller_heiman_blue_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/0018/4477/files/english_vocabulary_for_speaking.pdf
    • https://cdn.shopify.com/s/files/1/0440/2741/2645/files/oppenheim_signals_and_systems_solutions.pdf
    • https://static.usrfiles.com/ugd/a2c2bc_bd7a3f2f0bae484d8a7de289ae51f99c.pdf
    • https://static.usrfiles.com/ugd/87fdc7_1cfb471eb8a445a7a089e2682e5c61e3.pdf
    • https://static.usrfiles.com/ugd/a838c0_d1e50f2c923b4c7b9add81e40e085b0e.pdf
    • https://static.usrfiles.com/ugd/963627_cb55e9b2673b488998e8d55e65647e93.pdf
    • https://static.usrfiles.com/ugd/234f58_84815333531b4d4aa89dd37bbc6cfdc1.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/
    • https://cdn.shopify.com/s/files/1/0

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074a8.bin
ba1221995f602efad2ab18953d7c2984c017ead215d3fb4556b79ebf088a32a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74A8 5544 bytes
font_01_sfnt_off00008776.bin
1bc24a171191fb1107d87eb85a84aa3aaa6defdaf70f7f7ce386a6eeb9ff096e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8776 14080 bytes

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